BL808学习日志-3-DPI-RGB屏幕使用-LVGL D0

一、DPI-RGB驱动

BL808的手册上显示是支持RGB565屏幕显示输出的，但是一直没找到网上的使用例程。且官方的SDK显示也是能够使用的，只是缺少了驱动。这一部分驱动在SIPEED的SDK中已经内置了，今天就是简单的点亮一个800*480 RGB565的屏幕。

二、BL808支持的DPI-RGB屏幕格式

1.从手册可以看到，BL808支持的显示范围如下表：

Horizontal Active:屏幕横向最大显示分辨率为800，最小为176像素；

Vertical Active:屏幕纵向最大显示分辨率为480，最小为208；

也就是说日常的3英寸、4.3英寸、5英寸、7英寸的480*854类型是竖屏是不支持的，在这个地方我跳了坑，买了两块480*854的5英寸RGB屏幕，结果只能显示一半。因此只有横屏的高分辨率屏幕才是支持的。

目前我使用的是这一块5英寸屏幕，横屏显示，800*480 RGB888，驱动IC为ST7265;40P管脚。

使用0.5mm间距的FPC排线，上电不需要初始化屏参，直接输出屏幕数据就行。

（小知识点：一般竖屏的屏幕需要使用9bit的spi或者IIC来初始化屏幕主控，用来调节分辨率等各种参数，横屏的好像都是厂家默认设置好的参数，一般不需要调整，直接上电输出数据就可以）。

2.BL808只支持RGB565格式，一般默认的屏幕都是RGB888格式的，所以我是用的这款屏幕需要将BL808所对应的数据在高地址上对齐，在物理接口连线上屏幕的R0-R2,G0-G1,B0-B2是悬空的，而信号线接法如下：

BL808GPIO序号	BL808管脚定义	RGB屏幕FPC定义
GPIO17	DPI_DATA[0]	R[3]
...	...	...
GPIO21	DPI_DATA[4]	R[7]
GPIO22	DPI_DATA[5]	G[2]
...	...	...
GPIO27	DPI_DATA[10]	G[7]
GPIO28	DPI_DATA[11]	B[3]
...	...	...
GPIO32	DPI_DATA[15]	B[7]
GPIO33	DPI_DE	LCD_DE
GPIO12	DPI_VS	LCD_VS
GPIO13	DPI_HS	LCD_HS
GPIO16	DPI_PCLK	LCD_CLK
GPIO8	GPIO8	LCD_RST/DISP

其中上述GPIO8可以使用，也可以不使用，因为在不同的屏幕中对RST的要求是不太一样的。我在上面的5寸屏幕上是把FPC上的DISP管脚接到了GPIO8；用来进行复位控制。

三、M1s_Dock管脚复用

M1s_Dock开发板的管脚是不太多的，其中在使用RGB屏幕时基本上不会剩什么管脚可以使用了。因此需要按照需求进行部分重新分配。

按照上面的管脚需求表，开发板外接的2.54排座还剩如下管脚：GPIO6、GPIO7 、GPIO11、GPIO14、GPIO15、GPIO40、GPIO41。并且在M1s_Dock的BL702转双串口的时候，将GPIO14、GPIO15当作的E907(M0)内核的调试串口，将GPIO16、GPIO17当作C906(D0)的调试串口。现在后者被RGB屏幕占用了，因此需要将GPIO40、GPIO41这两个引脚，复用为C906的调试串口。

在引脚复用的时候还有一个问题就是，手册中描述引脚分为2个等级，一种是AON_IO，一种是PDS_IO；如下表，其中GPIO40、GPIO41就是特殊的AON_IO,因此在复用的时候还需要额外操作。（这一点在没完全看完资料的我来说是致命的，搞了2天才搞清楚为什么C906一直没输出）。

打开SIPEED对应的Linux下的开发SDK，对应目录为M1s_Bl808_SDK/components/sipeed/c906/m1s_start/src/start_main.c文件，这个是c906内核在freertos初始化的主函数对应文件；将第27-28行的管脚引用修改为

#define UART_TX_C906 (40)
#define UART_RX_C906 (41)

在头文件区域增加一个头文件调用， #include "bl808_glb.h"用来配置GPIO。

新增一个管脚配置函数，static void bfl_c906_uart0_tx_rx_remap_gpio_init(void)，用来使GPIO11-GPIO13、GPIO40、GPIO41失能AON功能；

static void bfl_c906_uart0_tx_rx_remap_gpio_init(void)
{HBN_AON_PAD_CFG_Type aonPadCfg = {DISABLE,DISABLE,DISABLE,HBN_GPIO_PAD_PULL_NONE,};HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO40, &aonPadCfg);HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO41, &aonPadCfg);
}static void bfl_c906_gpio_11_to_gpio_15_remap_gpio_init(void)
{HBN_AON_PAD_CFG_Type aonPadCfg = {DISABLE,DISABLE,DISABLE,HBN_GPIO_PAD_PULL_NONE,};HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO11, &aonPadCfg);HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO12, &aonPadCfg);HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO13, &aonPadCfg);}

在主函数bfl_main函数开始处调用上面的bfl_c906_uart0_tx_rx_remap_gpio_init(void)函数，

void bfl_main()
{if(UART_TX_C906 == 40 && UART_RX_C906 == 41)    //当使用RGB屏幕时需要使用11-15和40 41管脚，复用为普通IO管脚{bfl_c906_uart0_tx_rx_remap_gpio_init();bfl_c906_gpio_11_to_gpio_15_remap_gpio_init();}bl_uart_c906_init(0, UART_TX_C906, UART_RX_C906, 0, 0, UART_BAUD_C906);puts("Starting bl808 now....\r\n");bl808_FreeRTOS_init();puts("[OS] Starting aos_loop_proc task...\r\n");xTaskCreate(aos_loop_proc, (char *)"event_loop", 1024, NULL, 15, NULL);puts("[OS] Stop c906 xram handle...\r\n");// m1s_c906_xram_init();puts("[OS] Starting OS Scheduler...\r\n");vTaskStartScheduler();
}

完整的配置文件如下，因为我的C906并没有使用PWM功能，因此在主函数中注释掉了 m1s_c906_xram_init()函数，如果有使用的同学，还必须去E907的配置文件调节挺多项内容，来使用没有被RGB接口占用的GPIO管脚来操作PWM功能。


#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>/* FreeRTOS */
#include <FreeRTOS.h>
#include <task.h>
#include <timers.h>/* aos */
#include <aos/kernel.h>
#include <aos/yloop.h>
#include <cli.h>
#include <device/vfs_uart.h>
#include <event_device.h>
#include <vfs.h>/* driver */
#include <bl_uart.h>
#include <hosal_uart.h>
#include "bl808_glb.h"#include "m1s_c906_xram.h"
#define UART_ID_C906 (0)
#define UART_TX_C906 (40)
#define UART_RX_C906 (41)
#define UART_BAUD_C906 (2000000)HOSAL_UART_DEV_DECL(uart_stdio, UART_ID_C906, UART_TX_C906, UART_RX_C906, UART_BAUD_C906)static void bl808_FreeRTOS_init(void)
{extern uint8_t _heap_start_tcm;extern uint8_t _heap_size_tcm;static HeapRegion_t xHeapRegions[] = {{NULL, 0}, /* set on runtime */{NULL, 0}  /* Terminates the array */};xHeapRegions[0].pucStartAddress = (uint8_t *)&_heap_start_tcm;xHeapRegions[0].xSizeInBytes = (size_t)&_heap_size_tcm;printf("Heap Info: %ld KB @ [0x%p ~ 0x%p]\r\n", xHeapRegions[0].xSizeInBytes >> 10, xHeapRegions[0].pucStartAddress,xHeapRegions[0].pucStartAddress + xHeapRegions[0].xSizeInBytes);vPortDefineHeapRegions(xHeapRegions);
}void vApplicationStackOverflowHook(TaskHandle_t xTask, char *pcTaskName)
{puts("Stack Overflow checked\r\n");printf("Task Name %s\r\n", pcTaskName);while (1) {/*empty here*/}
}void vApplicationMallocFailedHook(void)
{printf("Memory Allocate Failed. Current left size is %lu bytes\r\n", xPortGetFreeHeapSize());while (1) {/*empty here*/}
}void vApplicationIdleHook(void) {}void vApplicationGetIdleTaskMemory(StaticTask_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer,uint32_t *pulIdleTaskStackSize)
{/* If the buffers to be provided to the Idle task are declared inside thisfunction then they must be declared static - otherwise they will be allocated onthe stack and so not exists after this function exits. */static StaticTask_t xIdleTaskTCB;static StackType_t uxIdleTaskStack[configMINIMAL_STACK_SIZE];/* Pass out a pointer to the StaticTask_t structure in which the Idle task'sstate will be stored. */*ppxIdleTaskTCBBuffer = &xIdleTaskTCB;/* Pass out the array that will be used as the Idle task's stack. */*ppxIdleTaskStackBuffer = uxIdleTaskStack;/* Pass out the size of the array pointed to by *ppxIdleTaskStackBuffer.Note that, as the array is necessarily of type StackType_t,configMINIMAL_STACK_SIZE is specified in words, not bytes. */*pulIdleTaskStackSize = configMINIMAL_STACK_SIZE;
}/* configSUPPORT_STATIC_ALLOCATION and configUSE_TIMERS are both set to 1, so the
application must provide an implementation of vApplicationGetTimerTaskMemory()
to provide the memory that is used by the Timer service task. */
void vApplicationGetTimerTaskMemory(StaticTask_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer,uint32_t *pulTimerTaskStackSize)
{/* If the buffers to be provided to the Timer task are declared inside thisfunction then they must be declared static - otherwise they will be allocated onthe stack and so not exists after this function exits. */static StaticTask_t xTimerTaskTCB;static StackType_t uxTimerTaskStack[configTIMER_TASK_STACK_DEPTH];/* Pass out a pointer to the StaticTask_t structure in which the Timertask's state will be stored. */*ppxTimerTaskTCBBuffer = &xTimerTaskTCB;/* Pass out the array that will be used as the Timer task's stack. */*ppxTimerTaskStackBuffer = uxTimerTaskStack;/* Pass out the size of the array pointed to by *ppxTimerTaskStackBuffer.Note that, as the array is necessarily of type StackType_t,configTIMER_TASK_STACK_DEPTH is specified in words, not bytes. */*pulTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH;
}void vAssertCalled(void)
{volatile uint32_t ulSetTo1ToExitFunction = 0;taskDISABLE_INTERRUPTS();while (ulSetTo1ToExitFunction != 1) {__asm volatile("NOP");}
}static inline void main_warpper()
{extern void main(void);main();vTaskDelete(NULL);
}static void start_main(void *arg) { xTaskCreate(main_warpper, (char *)"main", 4096, NULL, 15, NULL); }static void aos_loop_proc(void *pvParameters)
{int fd_console;vfs_init();vfs_device_init();/* uart */vfs_uart_init_simple_mode(UART_ID_C906, UART_TX_C906, UART_RX_C906, UART_BAUD_C906,"/dev/ttyS0");  // UART for cliaos_loop_init();fd_console = aos_open("/dev/ttyS0", 0);if (fd_console >= 0) {printf("Init CLI with event Driven\r\n");aos_cli_init(0);aos_poll_read_fd(fd_console, aos_cli_event_cb_read_get(), (void *)0x12345678);}aos_post_delayed_action(100, start_main, NULL);aos_loop_run();puts("------------------------------------------\r\n");puts("+++++++++Critical Exit From Loop++++++++++\r\n");puts("******************************************\r\n");vTaskDelete(NULL);
}static void bfl_c906_uart0_tx_rx_remap_gpio_init(void)
{HBN_AON_PAD_CFG_Type aonPadCfg = {DISABLE,DISABLE,DISABLE,HBN_GPIO_PAD_PULL_NONE,};HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO40, &aonPadCfg);HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO41, &aonPadCfg);
}static void bfl_c906_gpio_11_to_gpio_15_remap_gpio_init(void)
{HBN_AON_PAD_CFG_Type aonPadCfg = {DISABLE,DISABLE,DISABLE,HBN_GPIO_PAD_PULL_NONE,};HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO11, &aonPadCfg);HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO12, &aonPadCfg);HBN_Aon_Pad_Cfg(DISABLE, HBN_AON_PAD_GPIO13, &aonPadCfg);}
void bfl_main()
{if(UART_TX_C906 == 40 && UART_RX_C906 == 41)    //当使用RGB屏幕时需要使用11-15和40 41管脚，复用为普通IO管脚{bfl_c906_uart0_tx_rx_remap_gpio_init();bfl_c906_gpio_11_to_gpio_15_remap_gpio_init();}bl_uart_c906_init(0, UART_TX_C906, UART_RX_C906, 0, 0, UART_BAUD_C906);puts("Starting bl808 now....\r\n");bl808_FreeRTOS_init();puts("[OS] Starting aos_loop_proc task...\r\n");xTaskCreate(aos_loop_proc, (char *)"event_loop", 1024, NULL, 15, NULL);puts("[OS] Stop c906 xram handle...\r\n");// m1s_c906_xram_init();puts("[OS] Starting OS Scheduler...\r\n");vTaskStartScheduler();
}

四、DPI驱动文件修改

上面描述铺垫了这么多才真的到达正文，为自己丢掉的头发感到屈辱。。。。。再一次呼吁，厂家要不然就不要推出国产芯片，推出了就好好整啊，DIY玩家在没有资料和支持的时候，真的好难的。。。。

博流官方已经做好了驱动文件，但是却没有在自己家的SDK中开放出来，真的是脑洞大，看起来支持TOB的业务才是他们的重要之处。

1.打开SIPEED对应的Linux下的开发SDK，对应目录为M1s_Bl808_SDK/components/platform/soc/bl808/bl808_std/BSP_Common/lcd/mipi_dpistard_dpi.c文件。

在文件开头进行管脚定义，因为一开始我使用的是需要9bit配置显示驱动芯片的竖屏480*854的屏幕，因此还保留了这部分驱动代码，如果有同学刚好使用480*480之类的方形屏幕，还可以按照需求进行修改。里面定义了GPIO11作为LCD_CS，GPIO6作为LCD_SCL,GPIO7作为LCD_SDA

#define PIN_LCD_RESET (8)
#define PIN_LCD_CS (11)
#define PIN_LCD_SCL (6)
#define PIN_LCD_SDO (7)#define LCD_CS_H GLB_GPIO_Write(PIN_LCD_CS, 1)
#define LCD_CS_L GLB_GPIO_Write(PIN_LCD_CS, 0)#define LCD_SCL_H GLB_GPIO_Write(PIN_LCD_SCL, 1)
#define LCD_SCL_L GLB_GPIO_Write(PIN_LCD_SCL, 0)#define LCD_SDO_H GLB_GPIO_Write(PIN_LCD_SDO, 1)
#define LCD_SDO_L GLB_GPIO_Write(PIN_LCD_SDO, 0)

下面进行重头戏，也就是配置文件的讲解，这一部分加上我对RGB屏幕的不了解，耗费了一周的时间进行摸索，真是一个头两个大。

下面进行重要的参数寄存器讲解，

hTotalCnt:水平方向的像素总数，=Hsync+HBP+HACT+HFP-1,其中为什么需要-1，我查阅了好多MPU的设计，可能是为了对其在16进制下第一个数是0的原因，（具体我也不知道。。反正是没有文件，只是瞎猜的情况下，很难说清楚。。。。。）

hBlankCnt:水平方向的空白像素总数，=Hsync+HBP+HFP-1，也是就是总像素数-有效像素数。

vTotalCnt:纵向方向的总行数，=Vsync+VBP+VACT+VFP-1,

vBlankCnt:纵向方向的空白行数，=Vsync+VBP+VFP-1，也是就是总行数-有效行数。

hsyncWidth：水平信号同步宽度，我的屏幕手册是4个PCLK宽度，因此设置为4-1；

hfpWidth：水平前廊信号宽度，我的屏幕手册是8个PCLK宽度，因此设置为8-1;

vsyncWidth：纵向方向同步信号宽度，4-1；

vfpWidth：纵向方向前廊信号宽度，16-1；

下面附上我的屏幕参数表

dvp源配置结构体dvpTsrcCfg和display显示参数配置结构体displayCfg如下：

static DVP_TSRC_Cfg_Type dvpTsrcCfg = {.dataFromSensor = DISABLE,             /* Enable: pixel data is from sensor, disable: pixel data is from AXI */.sensorHsyncInverse = DISABLE,         /* Enable or disable inverse signal of sensor hsync */.sensorVsyncInverse = DISABLE,         /* Enable or disable inverse signal of sensor vsync */.yuv420Enable = DISABLE,               /* Enable or disable YUV420 mode, YUV420 data is from 2 different planar buffers when enable */.lineType = DVP_TSRC_YUV420_LINE_EVEN, /* Select UV send in Y even lines or odd lines */.swapMode = ENABLE,                    /* Enable or disable swap mode */.swapControl = DVP_TSRC_SWAP_SOFTWARE, /* Set swap index controlled by hardware or software */.dvp2axi = DVP_TSRC_DVP2AXI_0,         /* Choose dvp2axi used */
#if (STANDARD_DPI_PIXEL_FORMAT == STANDARD_DPI_PIXEL_FORMAT_RGB565).format = DVP_TSRC_PIXEL_RGB565_16TO24BIT, /* Set pixel data format */.byte0 = 0,                                /* Byte 0 selection */.byte1 = 2,                                /* Byte 1 Selection */.byte2 = 1,                                /* Byte 2 Selection */
#elif (STANDARD_DPI_PIXEL_FORMAT == STANDARD_DPI_PIXEL_FORMAT_RGB888).format = DVP_TSRC_PIXEL_RGBA8888_32TO24BIT, /* Set pixel data format */.byte0 = 0,                                  /* Byte 0 selection */.byte1 = 1,                                  /* Byte 1 Selection */.byte2 = 2,                                  /* Byte 2 Selection */
#endif.burst = DVP_TSRC_BURST_TYPE_INCR16, /* AXI burst length */.hTotalCnt = 820-1,                /* Horizontal total pixel count */.hBlankCnt = 20-1,                /* Horizontal blank stage pixel count */.vTotalCnt = 516-1,                /* Vertical total pixel count */.vBlankCnt = 36-1,                 /* Vertical blank stage pixel count */.prefetch = 0,                                                               /* Vertical prefetch start position, relativeto blank start position */.fifoThreshold = STANDARD_DPI_W,                                             /* FIFO threshold for each DVP line to start to output */.memStartY0 = 0,                                                             /* AXI2DVP start address, Y-planar in YUV420 mode, frame 0 in swap mode */.memSizeY0 = sizeof(standard_dpi_color_t) *STANDARD_DPI_W * STANDARD_DPI_H,  /* AXI2DVP memory size of memStartY0 */.memStartY1 = 0,                                                             /* AXI2DVP start address, Y-planar in YUV420 mode,  frame 1 in swap mode, don't care if not swap mode */.memStartUV0 = 0,                                                            /* AXI2DVP start address, UV-planar in YUV420 mode, frame 0 in swap mode, don't care if not YUV420 mode */.memStartUV1 = 0,                                                            /* AXI2DVP start address, UV-planar in YUV420 mode, frame 1 in swap mode, don't care if not YUV420 swap mode */
};static DSP2_MISC_Display_Cfg_Type displayCfg = {.dpiEnable = ENABLE,                               /* Enable or disable dpi function */.bt1120Enable = DISABLE,                           /* Enable or disable BT1120 function, BT1120 and BT656 should not be enabled at the same time */.inputType = DSP2_MISC_DISPLAY_TSRC_RGB_OUTPUT,     /* Select display input */.osdType = DSP2_MISC_DISPLAY_OSD_TSRCYUV422_OUTPUT, /* Select display OSD input */.hsyncWidth = 4-1,                               /* Horizontal synchronization width */.hfpWidth = 8-1 ,                      /* Horizontal front porch width */.vsyncWidth = 4-1,                               /* Vertical synchronization width */.vfpWidth = 16-1,                        /* Vertical front porch width */
};

配置完上述屏幕，还需要对PCLK时钟的频率进行配置。BL808的默认MIPIPLL时钟是1500M，可按照需求进行分频，分频设置函数很奇怪，GLB_Set_Display_CLK(ENABLE, GLB_DISP_CLK_MIPIPLL_1500M, 29)函数默认只能配置输入为偶数的数值，在具体实现过程中或发现，舍弃了最低位。

我的屏幕在显示60FPS的情况下，需要的时钟频率为820*516*2*60=50.7744M，因此分频系数为1500/50.77=29,


static int standard_dpi_peripheral_init(standard_dpi_color_t *screen_buffer)
{/* MIPI clock config */GLB_Config_MIPI_PLL(GLB_XTAL_40M, mipiPllCfg_1500M);GLB_Set_Display_CLK(ENABLE, GLB_DISP_CLK_MIPIPLL_1500M, 29); //0-127// GLB_Set_Display_CLK(ENABLE, GLB_DISP_CLK_MIPIPLL_1500M, 59);dvpTsrcCfg.memStartY0 = (uint32_t)(uintptr_t)screen_buffer;/* DPI config */DVP_TSRC_Set_Swap_Index(DVP_TSRC1_ID, 1);DVP_TSRC_Init(DVP_TSRC1_ID, &dvpTsrcCfg);DSP2_MISC_Display_Init(&displayCfg);// DVP_TSRC_Fake_Data_Init(DVP_TSRC1_ID, &test_fake_data);/* Set display interrupt */DSP2_MISC_Int_Mask(DSP2_MISC_INT_ALL, MASK);DSP2_MISC_SEOF_Set_Source(DSP2_MISC_INT_DISPLAY, DSP2_MISC_SEOF_DISPLAY_OUTPUT);DSP2_MISC_SEOF_Set_Edge(DSP2_MISC_INT_DISPLAY, DSP2_MISC_SEOF_VSYNC_NEGEDGE);DSP2_MISC_Int_Callback_Install(DSP2_MISC_INT_DISPLAY, &standard_dpi_frame_interrupt);DSP2_MISC_Int_Mask(DSP2_MISC_INT_DISPLAY, UNMASK);CPU_Interrupt_Enable(DISPLAY_IRQn);System_NVIC_SetPriority(DISPLAY_IRQn, 4, 1);return 0;
}

对使用到的LCD_RST、LCD_SDA、LCD_SCL、LCD_CS管脚进行初始化，对使用到的RGB管脚好像不初始化也可以。

static void lcd_dpi_gpio_init(void)
{GLB_GPIO_Cfg_Type cfg;uint8_t gpiopins[] = {GLB_GPIO_PIN_12, GLB_GPIO_PIN_13, GLB_GPIO_PIN_16, GLB_GPIO_PIN_17, GLB_GPIO_PIN_18, GLB_GPIO_PIN_19, GLB_GPIO_PIN_20, GLB_GPIO_PIN_21,GLB_GPIO_PIN_22,GLB_GPIO_PIN_23,GLB_GPIO_PIN_24,GLB_GPIO_PIN_33, GLB_GPIO_PIN_32, GLB_GPIO_PIN_31, GLB_GPIO_PIN_30, GLB_GPIO_PIN_29,GLB_GPIO_PIN_28, GLB_GPIO_PIN_27, GLB_GPIO_PIN_26, GLB_GPIO_PIN_25};int i;cfg.gpioMode=GPIO_MODE_AF;cfg.pullType=GPIO_PULL_NONE;cfg.drive=0;cfg.smtCtrl=1;for(i=0;i<sizeof(gpiopins)/sizeof(gpiopins[0]);i++){cfg.gpioPin=gpiopins[i];cfg.gpioFun=GPIO_FUN_DPI;GLB_GPIO_Init(&cfg);}
}static void LCD_FD050FW_GPIO_init(void)
{GLB_GPIO_Cfg_Type cfg;cfg.drive = 0;cfg.smtCtrl = 1;cfg.gpioFun = GPIO_FUN_GPIO;cfg.outputMode = 0;cfg.pullType = GPIO_PULL_NONE;cfg.gpioPin = PIN_LCD_CS;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_CS, true);GLB_GPIO_Output_Enable(PIN_LCD_CS);cfg.gpioPin = PIN_LCD_RESET;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_RESET, true);GLB_GPIO_Output_Enable(PIN_LCD_RESET);cfg.gpioPin = PIN_LCD_SCL;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_SCL, true);GLB_GPIO_Output_Enable(PIN_LCD_SCL);cfg.gpioPin = PIN_LCD_SDO;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_SDO, true);GLB_GPIO_Output_Enable(PIN_LCD_SDO);
}

下面的函数为9bit_spi主控初始化的函数，横屏的是不需要用到的，但是竖屏的可能会使用到，我也就直接贴出来。


static void write_cmd(unsigned char cmd)
{unsigned char i;LCD_CS_L;LCD_SCL_L;LCD_SDO_L;LCD_SCL_H;for(i=0;i<8;i++){LCD_SCL_L;   if(cmd & 0x80)LCD_SDO_H;elseLCD_SDO_L;LCD_SCL_H;cmd = cmd << 1;}LCD_CS_H;    
}static void write_data(unsigned char data)
{unsigned char i;LCD_CS_L;LCD_SCL_L;LCD_SDO_H;LCD_SCL_H;for(i=0;i<8;i++){LCD_SCL_L;   if(data & 0x80)LCD_SDO_H;elseLCD_SDO_L;LCD_SCL_H;data = data << 1;}LCD_CS_H;    
}
static void lcd_dpi_gpio_init(void)
{GLB_GPIO_Cfg_Type cfg;uint8_t gpiopins[] = {GLB_GPIO_PIN_12, GLB_GPIO_PIN_13, GLB_GPIO_PIN_16, GLB_GPIO_PIN_17, GLB_GPIO_PIN_18, GLB_GPIO_PIN_19, GLB_GPIO_PIN_20, GLB_GPIO_PIN_21,GLB_GPIO_PIN_22,GLB_GPIO_PIN_23,GLB_GPIO_PIN_24,GLB_GPIO_PIN_33, GLB_GPIO_PIN_32, GLB_GPIO_PIN_31, GLB_GPIO_PIN_30, GLB_GPIO_PIN_29,GLB_GPIO_PIN_28, GLB_GPIO_PIN_27, GLB_GPIO_PIN_26, GLB_GPIO_PIN_25};int i;cfg.gpioMode=GPIO_MODE_AF;cfg.pullType=GPIO_PULL_NONE;cfg.drive=0;cfg.smtCtrl=1;for(i=0;i<sizeof(gpiopins)/sizeof(gpiopins[0]);i++){cfg.gpioPin=gpiopins[i];cfg.gpioFun=GPIO_FUN_DPI;GLB_GPIO_Init(&cfg);}
}static void LCD_FD050FW_GPIO_init(void)
{GLB_GPIO_Cfg_Type cfg;cfg.drive = 0;cfg.smtCtrl = 1;cfg.gpioFun = GPIO_FUN_GPIO;cfg.outputMode = 0;cfg.pullType = GPIO_PULL_NONE;cfg.gpioPin = PIN_LCD_CS;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_CS, true);GLB_GPIO_Output_Enable(PIN_LCD_CS);cfg.gpioPin = PIN_LCD_RESET;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_RESET, true);GLB_GPIO_Output_Enable(PIN_LCD_RESET);cfg.gpioPin = PIN_LCD_SCL;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_SCL, true);GLB_GPIO_Output_Enable(PIN_LCD_SCL);cfg.gpioPin = PIN_LCD_SDO;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_SDO, true);GLB_GPIO_Output_Enable(PIN_LCD_SDO);
}static void LCD_KD050FW_init(void)
{LCD_FD050FW_GPIO_init();GLB_GPIO_Write(PIN_LCD_RESET, true);bflb_platform_delay_ms(1);GLB_GPIO_Write(PIN_LCD_RESET, false);bflb_platform_delay_ms(10);GLB_GPIO_Write(PIN_LCD_RESET, true);bflb_platform_delay_ms(200);//***************************************************************//LCD SETINGwrite_cmd(0xFF);        // Change to Page 1 CMD write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x01); write_cmd(0x08); //Output    SDA write_data(0x10);write_cmd(0x20);    //set DE/VSYNC mode    write_data(0x00);  //00:DE mode    01:SYNC mode   write_cmd(0x21); //DE = 1 Active write_data(0x01); write_cmd(0x22); //设置扫描模式，镜像，翻转write_data(0x00); // write_cmd(0x25); //vfp=22//  write_data(0x16); //  write_cmd(0x26); ////  write_data(0x18); //  write_cmd(0x27); ////  write_data(0x2F); write_cmd(0x30);//Resolution setting 480 X 800write_data(0x02); //00:480*864 01:480*854 02:480*800 write_cmd(0x31); //Inversion setting 2-dot write_data(0x00); write_cmd(0x40); //BT  AVDD,AVDDwrite_data(0x16); //   VCI*2.5 / VCI X-3write_cmd(0x41);   write_data(0x33);//22  write_cmd(0x42);        write_data(0x03); //VGL=DDVDH+VCIP -DDVDL,VGH=2DDVDL-VCIP write_cmd(0x43);       write_data(0x09); //SET VGH clamp level write_cmd(0x44);       write_data(0x06); //SET VGL clamp level write_cmd(0x50); //VREG1 write_data(0x88); write_cmd(0x51); //VREG2 write_data(0x88); write_cmd(0x52); //Flicker MSB write_data(0x00); write_cmd(0x53); //Flicker LSB write_data(0x44); //VCOMwrite_cmd(0x55); // //Flicker              write_data(0x49);write_cmd(0x60);       write_data(0x07); write_cmd(0x61);        write_data(0x00); write_cmd(0x62);      write_data(0x07); write_cmd(0x63);      write_data(0x00); //++++++++++++++++++ Gamma Setting ++++++++++++++++++//write_cmd(0xA0);  //Positive Gamma write_data(0x00); write_cmd(0xA1);        // write_data(0x09); write_cmd(0xA2);        // write_data(0x11); write_cmd(0xA3);        // write_data(0x0B); write_cmd(0xA4);        // write_data(0x05); write_cmd(0xA5);        // write_data(0x08); write_cmd(0xA6);        // write_data(0x06); write_cmd(0xA7);        // write_data(0x04); write_cmd(0xA8);        // write_data(0x09); write_cmd(0xA9);        // write_data(0x0C); write_cmd(0xAA);        // write_data(0x15); write_cmd(0xAB);        // write_data(0x08); write_cmd(0xAC);        // write_data(0x0F); write_cmd(0xAD);        // write_data(0x12); write_cmd(0xAE);        // write_data(0x09); write_cmd(0xAF);        // write_data(0x00); ///==============Nagitivewrite_cmd(0xC0);        //Negative Gamma write_data(0x00); write_cmd(0xC1);        // write_data(0x09); write_cmd(0xC2);        // write_data(0x10); write_cmd(0xC3);        // write_data(0x0C); write_cmd(0xC4);        // write_data(0x05); write_cmd(0xC5);        // write_data(0x08); write_cmd(0xC6);        // write_data(0x06); write_cmd(0xC7);        // write_data(0x04); write_cmd(0xC8);        // write_data(0x08); write_cmd(0xC9);        // write_data(0x0C); write_cmd(0xCA);        // write_data(0x14); write_cmd(0xCB);        // write_data(0x08); write_cmd(0xCC);        // write_data(0x0F); write_cmd(0xCD);        // write_data(0x11); write_cmd(0xCE);        // write_data(0x09); write_cmd(0xCF);        // write_data(0x00); write_cmd(0xFF); // Change to Page 6 CMD for GIP timing   write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x06);write_cmd(0x00);        // write_data(0x20); write_cmd(0x01);        // write_data(0x0A); write_cmd(0x02);        // write_data(0x00); write_cmd(0x03);        // write_data(0x00); write_cmd(0x04);        // write_data(0x01); write_cmd(0x05);        // write_data(0x01); write_cmd(0x06);        // write_data(0x98); write_cmd(0x07);        // write_data(0x06); write_cmd(0x08);        // write_data(0x01); write_cmd(0x09);        // write_data(0x80); write_cmd(0x0A);        // write_data(0x00); write_cmd(0x0B);        // write_data(0x00); write_cmd(0x0C);        // write_data(0x01); write_cmd(0x0D);        // write_data(0x01); write_cmd(0x0E);        // write_data(0x05); write_cmd(0x0F);        // write_data(0x00);write_cmd(0x10);        // write_data(0xF0); write_cmd(0x11);        // write_data(0xF4); write_cmd(0x12);        // write_data(0x01); write_cmd(0x13);        // write_data(0x00); write_cmd(0x14);        // write_data(0x00); write_cmd(0x15);        // write_data(0xC0); write_cmd(0x16);        // write_data(0x08); write_cmd(0x17);        // write_data(0x00); write_cmd(0x18);        // write_data(0x00); write_cmd(0x19);        // write_data(0x00); write_cmd(0x1A);        // write_data(0x00); write_cmd(0x1B);        // write_data(0x00); write_cmd(0x1C);        // write_data(0x00); write_cmd(0x1D);        // write_data(0x00);write_cmd(0x20);        // write_data(0x01); write_cmd(0x21);        // write_data(0x23); write_cmd(0x22);        // write_data(0x45); write_cmd(0x23);        // write_data(0x67); write_cmd(0x24);        // write_data(0x01); write_cmd(0x25);        // write_data(0x23); write_cmd(0x26);        // write_data(0x45); write_cmd(0x27);        // write_data(0x67);write_cmd(0x30);        // write_data(0x11); write_cmd(0x31);        // write_data(0x11); write_cmd(0x32);        // write_data(0x00); write_cmd(0x33);        // write_data(0xEE); write_cmd(0x34);        // write_data(0xFF); write_cmd(0x35);        // write_data(0xBB); write_cmd(0x36);        // write_data(0xAA); write_cmd(0x37);        // write_data(0xDD); write_cmd(0x38);        // write_data(0xCC); write_cmd(0x39);        // write_data(0x66); write_cmd(0x3A);        // write_data(0x77); write_cmd(0x3B);        // write_data(0x22); write_cmd(0x3C);        // write_data(0x22); write_cmd(0x3D);        // write_data(0x22); write_cmd(0x3E);        // write_data(0x22); write_cmd(0x3F);        // write_data(0x22); write_cmd(0x40);        // write_data(0x22);write_cmd(0xFF);// Change to Page 7 CMD for GIP timing   write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x07);write_cmd(0x17);       write_data(0x22); write_cmd(0x02);        write_data(0x77);write_cmd(0x26);        write_data(0xB2);write_cmd(0xFF); // Change to Page 0 CMD for Normal command write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x00);write_cmd(0x3A);      write_data(0x50);  //0X50 16BIT 0X60 18BIT 0X70 24BIT write_cmd(0x11);    // SLEEP OUTbflb_platform_delay_ms(120);write_cmd(0x29);   // DISPLAY ONbflb_platform_delay_ms(25);}

在DPI初始化函数中，对上述构造的功能函数进行调用，

int standard_dpi_init(standard_dpi_color_t *screen_buffer)
{if (screen_buffer == NULL) {return -1;}lcd_dpi_gpio_init();// LCD_KD050FW_init();/* init DBI and DPI peripheral*/standard_dpi_peripheral_init(screen_buffer);/* enable DPI, Start output data*/DVP_TSRC_Enable(DVP_TSRC1_ID);return 0;
}

上述文件中，完整的文件如下：

/*** @file standard_dpi.c* @brief** Copyright (c) 2021 Bouffalolab team** Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.  The* ASF licenses this file to you under the Apache License, Version 2.0 (the* "License"); you may not use this file except in compliance with the* License.  You may obtain a copy of the License at**   http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the* License for the specific language governing permissions and limitations* under the License.**/#include "../lcd.h"#if defined(LCD_DPI_STANDARD) #include "bflb_platform.h"#include "bl808_dvp_tsrc.h"
#include "bl808_dsp2_misc.h"
#include "bl808_dbi.h"
#include "bl808_glb.h"
#include "dtsrc_reg.h"#include "standard_dpi.h"#define PIN_LCD_RESET (8)
#define PIN_LCD_CS (11)
#define PIN_LCD_SCL (6)
#define PIN_LCD_SDO (7)#define LCD_CS_H GLB_GPIO_Write(PIN_LCD_CS, 1)
#define LCD_CS_L GLB_GPIO_Write(PIN_LCD_CS, 0)#define LCD_SCL_H GLB_GPIO_Write(PIN_LCD_SCL, 1)
#define LCD_SCL_L GLB_GPIO_Write(PIN_LCD_SCL, 0)#define LCD_SDO_H GLB_GPIO_Write(PIN_LCD_SDO, 1)
#define LCD_SDO_L GLB_GPIO_Write(PIN_LCD_SDO, 0)/* Video memory used for this frame, Update in frame interrupt*/
static volatile standard_dpi_color_t *screen_last = NULL;
typedef void (*standard_dpi_callback)(void);
static volatile standard_dpi_callback standard_dpi_frame_callback = NULL;
static volatile standard_dpi_callback standard_dpi_frame_swap_callback = NULL;static DVP_TSRC_Fake_Data_Cfg_Type test_fake_data={.minData = 0x0000,.maxData = 0xffff,.step = 0x10,
};static DVP_TSRC_Cfg_Type dvpTsrcCfg = {.dataFromSensor = DISABLE,             /* Enable: pixel data is from sensor, disable: pixel data is from AXI */.sensorHsyncInverse = DISABLE,         /* Enable or disable inverse signal of sensor hsync */.sensorVsyncInverse = DISABLE,         /* Enable or disable inverse signal of sensor vsync */.yuv420Enable = DISABLE,               /* Enable or disable YUV420 mode, YUV420 data is from 2 different planar buffers when enable */.lineType = DVP_TSRC_YUV420_LINE_EVEN, /* Select UV send in Y even lines or odd lines */.swapMode = ENABLE,                    /* Enable or disable swap mode */.swapControl = DVP_TSRC_SWAP_SOFTWARE, /* Set swap index controlled by hardware or software */.dvp2axi = DVP_TSRC_DVP2AXI_0,         /* Choose dvp2axi used */
#if (STANDARD_DPI_PIXEL_FORMAT == STANDARD_DPI_PIXEL_FORMAT_RGB565).format = DVP_TSRC_PIXEL_RGB565_16TO24BIT, /* Set pixel data format */.byte0 = 0,                                /* Byte 0 selection */.byte1 = 2,                                /* Byte 1 Selection */.byte2 = 1,                                /* Byte 2 Selection */
#elif (STANDARD_DPI_PIXEL_FORMAT == STANDARD_DPI_PIXEL_FORMAT_RGB888).format = DVP_TSRC_PIXEL_RGBA8888_32TO24BIT, /* Set pixel data format */.byte0 = 0,                                  /* Byte 0 selection */.byte1 = 1,                                  /* Byte 1 Selection */.byte2 = 2,                                  /* Byte 2 Selection */
#endif.burst = DVP_TSRC_BURST_TYPE_INCR16, /* AXI burst length */.hTotalCnt = 820-1,                /* Horizontal total pixel count */.hBlankCnt = 20-1,                /* Horizontal blank stage pixel count */.vTotalCnt = 516-1,                /* Vertical total pixel count */.vBlankCnt = 36-1,                 /* Vertical blank stage pixel count */.prefetch = 0,                                                               /* Vertical prefetch start position, relativeto blank start position */.fifoThreshold = STANDARD_DPI_W,                                             /* FIFO threshold for each DVP line to start to output */.memStartY0 = 0,                                                             /* AXI2DVP start address, Y-planar in YUV420 mode, frame 0 in swap mode */.memSizeY0 = sizeof(standard_dpi_color_t) *STANDARD_DPI_W * STANDARD_DPI_H,  /* AXI2DVP memory size of memStartY0 */.memStartY1 = 0,                                                             /* AXI2DVP start address, Y-planar in YUV420 mode,  frame 1 in swap mode, don't care if not swap mode */.memStartUV0 = 0,                                                            /* AXI2DVP start address, UV-planar in YUV420 mode, frame 0 in swap mode, don't care if not YUV420 mode */.memStartUV1 = 0,                                                            /* AXI2DVP start address, UV-planar in YUV420 mode, frame 1 in swap mode, don't care if not YUV420 swap mode */
};static DSP2_MISC_Display_Cfg_Type displayCfg = {.dpiEnable = ENABLE,                               /* Enable or disable dpi function */.bt1120Enable = DISABLE,                           /* Enable or disable BT1120 function, BT1120 and BT656 should not be enabled at the same time */.inputType = DSP2_MISC_DISPLAY_TSRC_RGB_OUTPUT,     /* Select display input */.osdType = DSP2_MISC_DISPLAY_OSD_TSRCYUV422_OUTPUT, /* Select display OSD input */.hsyncWidth = 4-1,                               /* Horizontal synchronization width */.hfpWidth = 8-1 ,                      /* Horizontal front porch width */.vsyncWidth = 4-1,                               /* Vertical synchronization width */.vfpWidth = 16-1,                        /* Vertical front porch width */
};void standard_dpi_frame_interrupt(void)
{uint8_t swap_flag = 0;DSP2_MISC_Int_Clear_1(DSP2_MISC_INT_DISPLAY);standard_dpi_color_t *screen_next = (standard_dpi_color_t *)(uintptr_t)BL_RD_REG(DVP_TSRC1_BASE, DTSRC_AXI2DVP_START_ADDR_BY);if (screen_last != screen_next) {swap_flag = 1;screen_last = screen_next;}if (standard_dpi_frame_callback != NULL) {standard_dpi_frame_callback();}if (standard_dpi_frame_swap_callback != 0 && swap_flag) {standard_dpi_frame_swap_callback();}
}static int standard_dpi_peripheral_init(standard_dpi_color_t *screen_buffer)
{/* MIPI clock config */GLB_Config_MIPI_PLL(GLB_XTAL_40M, mipiPllCfg_1500M);GLB_Set_Display_CLK(ENABLE, GLB_DISP_CLK_MIPIPLL_1500M, 29); //0-127// GLB_Set_Display_CLK(ENABLE, GLB_DISP_CLK_MIPIPLL_1500M, 59);dvpTsrcCfg.memStartY0 = (uint32_t)(uintptr_t)screen_buffer;/* DPI config */DVP_TSRC_Set_Swap_Index(DVP_TSRC1_ID, 1);DVP_TSRC_Init(DVP_TSRC1_ID, &dvpTsrcCfg);DSP2_MISC_Display_Init(&displayCfg);// DVP_TSRC_Fake_Data_Init(DVP_TSRC1_ID, &test_fake_data);/* Set display interrupt */DSP2_MISC_Int_Mask(DSP2_MISC_INT_ALL, MASK);DSP2_MISC_SEOF_Set_Source(DSP2_MISC_INT_DISPLAY, DSP2_MISC_SEOF_DISPLAY_OUTPUT);DSP2_MISC_SEOF_Set_Edge(DSP2_MISC_INT_DISPLAY, DSP2_MISC_SEOF_VSYNC_NEGEDGE);DSP2_MISC_Int_Callback_Install(DSP2_MISC_INT_DISPLAY, &standard_dpi_frame_interrupt);DSP2_MISC_Int_Mask(DSP2_MISC_INT_DISPLAY, UNMASK);CPU_Interrupt_Enable(DISPLAY_IRQn);System_NVIC_SetPriority(DISPLAY_IRQn, 4, 1);return 0;
}static void write_cmd(unsigned char cmd)
{unsigned char i;LCD_CS_L;LCD_SCL_L;LCD_SDO_L;LCD_SCL_H;for(i=0;i<8;i++){LCD_SCL_L;   if(cmd & 0x80)LCD_SDO_H;elseLCD_SDO_L;LCD_SCL_H;cmd = cmd << 1;}LCD_CS_H;    
}static void write_data(unsigned char data)
{unsigned char i;LCD_CS_L;LCD_SCL_L;LCD_SDO_H;LCD_SCL_H;for(i=0;i<8;i++){LCD_SCL_L;   if(data & 0x80)LCD_SDO_H;elseLCD_SDO_L;LCD_SCL_H;data = data << 1;}LCD_CS_H;    
}
static void lcd_dpi_gpio_init(void)
{GLB_GPIO_Cfg_Type cfg;uint8_t gpiopins[] = {GLB_GPIO_PIN_12, GLB_GPIO_PIN_13, GLB_GPIO_PIN_16, GLB_GPIO_PIN_17, GLB_GPIO_PIN_18, GLB_GPIO_PIN_19, GLB_GPIO_PIN_20, GLB_GPIO_PIN_21,GLB_GPIO_PIN_22,GLB_GPIO_PIN_23,GLB_GPIO_PIN_24,GLB_GPIO_PIN_33, GLB_GPIO_PIN_32, GLB_GPIO_PIN_31, GLB_GPIO_PIN_30, GLB_GPIO_PIN_29,GLB_GPIO_PIN_28, GLB_GPIO_PIN_27, GLB_GPIO_PIN_26, GLB_GPIO_PIN_25};int i;cfg.gpioMode=GPIO_MODE_AF;cfg.pullType=GPIO_PULL_NONE;cfg.drive=0;cfg.smtCtrl=1;for(i=0;i<sizeof(gpiopins)/sizeof(gpiopins[0]);i++){cfg.gpioPin=gpiopins[i];cfg.gpioFun=GPIO_FUN_DPI;GLB_GPIO_Init(&cfg);}
}static void LCD_FD050FW_GPIO_init(void)
{GLB_GPIO_Cfg_Type cfg;cfg.drive = 0;cfg.smtCtrl = 1;cfg.gpioFun = GPIO_FUN_GPIO;cfg.outputMode = 0;cfg.pullType = GPIO_PULL_NONE;cfg.gpioPin = PIN_LCD_CS;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_CS, true);GLB_GPIO_Output_Enable(PIN_LCD_CS);cfg.gpioPin = PIN_LCD_RESET;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_RESET, true);GLB_GPIO_Output_Enable(PIN_LCD_RESET);cfg.gpioPin = PIN_LCD_SCL;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_SCL, true);GLB_GPIO_Output_Enable(PIN_LCD_SCL);cfg.gpioPin = PIN_LCD_SDO;cfg.gpioMode = GPIO_MODE_OUTPUT;GLB_GPIO_Init(&cfg);GLB_GPIO_Write(PIN_LCD_SDO, true);GLB_GPIO_Output_Enable(PIN_LCD_SDO);
}static void LCD_KD050FW_init(void)
{LCD_FD050FW_GPIO_init();GLB_GPIO_Write(PIN_LCD_RESET, true);bflb_platform_delay_ms(1);GLB_GPIO_Write(PIN_LCD_RESET, false);bflb_platform_delay_ms(10);GLB_GPIO_Write(PIN_LCD_RESET, true);bflb_platform_delay_ms(200);//***************************************************************//LCD SETINGwrite_cmd(0xFF);        // Change to Page 1 CMD write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x01); write_cmd(0x08); //Output    SDA write_data(0x10);write_cmd(0x20);    //set DE/VSYNC mode    write_data(0x00);  //00:DE mode    01:SYNC mode   write_cmd(0x21); //DE = 1 Active write_data(0x01); write_cmd(0x22); //设置扫描模式，镜像，翻转write_data(0x00); // write_cmd(0x25); //vfp=22//  write_data(0x16); //  write_cmd(0x26); ////  write_data(0x18); //  write_cmd(0x27); ////  write_data(0x2F); write_cmd(0x30);//Resolution setting 480 X 800write_data(0x02); //00:480*864 01:480*854 02:480*800 write_cmd(0x31); //Inversion setting 2-dot write_data(0x00); write_cmd(0x40); //BT  AVDD,AVDDwrite_data(0x16); //   VCI*2.5 / VCI X-3write_cmd(0x41);   write_data(0x33);//22  write_cmd(0x42);        write_data(0x03); //VGL=DDVDH+VCIP -DDVDL,VGH=2DDVDL-VCIP write_cmd(0x43);       write_data(0x09); //SET VGH clamp level write_cmd(0x44);       write_data(0x06); //SET VGL clamp level write_cmd(0x50); //VREG1 write_data(0x88); write_cmd(0x51); //VREG2 write_data(0x88); write_cmd(0x52); //Flicker MSB write_data(0x00); write_cmd(0x53); //Flicker LSB write_data(0x44); //VCOMwrite_cmd(0x55); // //Flicker              write_data(0x49);write_cmd(0x60);       write_data(0x07); write_cmd(0x61);        write_data(0x00); write_cmd(0x62);      write_data(0x07); write_cmd(0x63);      write_data(0x00); //++++++++++++++++++ Gamma Setting ++++++++++++++++++//write_cmd(0xA0);  //Positive Gamma write_data(0x00); write_cmd(0xA1);        // write_data(0x09); write_cmd(0xA2);        // write_data(0x11); write_cmd(0xA3);        // write_data(0x0B); write_cmd(0xA4);        // write_data(0x05); write_cmd(0xA5);        // write_data(0x08); write_cmd(0xA6);        // write_data(0x06); write_cmd(0xA7);        // write_data(0x04); write_cmd(0xA8);        // write_data(0x09); write_cmd(0xA9);        // write_data(0x0C); write_cmd(0xAA);        // write_data(0x15); write_cmd(0xAB);        // write_data(0x08); write_cmd(0xAC);        // write_data(0x0F); write_cmd(0xAD);        // write_data(0x12); write_cmd(0xAE);        // write_data(0x09); write_cmd(0xAF);        // write_data(0x00); ///==============Nagitivewrite_cmd(0xC0);        //Negative Gamma write_data(0x00); write_cmd(0xC1);        // write_data(0x09); write_cmd(0xC2);        // write_data(0x10); write_cmd(0xC3);        // write_data(0x0C); write_cmd(0xC4);        // write_data(0x05); write_cmd(0xC5);        // write_data(0x08); write_cmd(0xC6);        // write_data(0x06); write_cmd(0xC7);        // write_data(0x04); write_cmd(0xC8);        // write_data(0x08); write_cmd(0xC9);        // write_data(0x0C); write_cmd(0xCA);        // write_data(0x14); write_cmd(0xCB);        // write_data(0x08); write_cmd(0xCC);        // write_data(0x0F); write_cmd(0xCD);        // write_data(0x11); write_cmd(0xCE);        // write_data(0x09); write_cmd(0xCF);        // write_data(0x00); write_cmd(0xFF); // Change to Page 6 CMD for GIP timing   write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x06);write_cmd(0x00);        // write_data(0x20); write_cmd(0x01);        // write_data(0x0A); write_cmd(0x02);        // write_data(0x00); write_cmd(0x03);        // write_data(0x00); write_cmd(0x04);        // write_data(0x01); write_cmd(0x05);        // write_data(0x01); write_cmd(0x06);        // write_data(0x98); write_cmd(0x07);        // write_data(0x06); write_cmd(0x08);        // write_data(0x01); write_cmd(0x09);        // write_data(0x80); write_cmd(0x0A);        // write_data(0x00); write_cmd(0x0B);        // write_data(0x00); write_cmd(0x0C);        // write_data(0x01); write_cmd(0x0D);        // write_data(0x01); write_cmd(0x0E);        // write_data(0x05); write_cmd(0x0F);        // write_data(0x00);write_cmd(0x10);        // write_data(0xF0); write_cmd(0x11);        // write_data(0xF4); write_cmd(0x12);        // write_data(0x01); write_cmd(0x13);        // write_data(0x00); write_cmd(0x14);        // write_data(0x00); write_cmd(0x15);        // write_data(0xC0); write_cmd(0x16);        // write_data(0x08); write_cmd(0x17);        // write_data(0x00); write_cmd(0x18);        // write_data(0x00); write_cmd(0x19);        // write_data(0x00); write_cmd(0x1A);        // write_data(0x00); write_cmd(0x1B);        // write_data(0x00); write_cmd(0x1C);        // write_data(0x00); write_cmd(0x1D);        // write_data(0x00);write_cmd(0x20);        // write_data(0x01); write_cmd(0x21);        // write_data(0x23); write_cmd(0x22);        // write_data(0x45); write_cmd(0x23);        // write_data(0x67); write_cmd(0x24);        // write_data(0x01); write_cmd(0x25);        // write_data(0x23); write_cmd(0x26);        // write_data(0x45); write_cmd(0x27);        // write_data(0x67);write_cmd(0x30);        // write_data(0x11); write_cmd(0x31);        // write_data(0x11); write_cmd(0x32);        // write_data(0x00); write_cmd(0x33);        // write_data(0xEE); write_cmd(0x34);        // write_data(0xFF); write_cmd(0x35);        // write_data(0xBB); write_cmd(0x36);        // write_data(0xAA); write_cmd(0x37);        // write_data(0xDD); write_cmd(0x38);        // write_data(0xCC); write_cmd(0x39);        // write_data(0x66); write_cmd(0x3A);        // write_data(0x77); write_cmd(0x3B);        // write_data(0x22); write_cmd(0x3C);        // write_data(0x22); write_cmd(0x3D);        // write_data(0x22); write_cmd(0x3E);        // write_data(0x22); write_cmd(0x3F);        // write_data(0x22); write_cmd(0x40);        // write_data(0x22);write_cmd(0xFF);// Change to Page 7 CMD for GIP timing   write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x07);write_cmd(0x17);       write_data(0x22); write_cmd(0x02);        write_data(0x77);write_cmd(0x26);        write_data(0xB2);write_cmd(0xFF); // Change to Page 0 CMD for Normal command write_data(0xFF); write_data(0x98); write_data(0x06); write_data(0x04); write_data(0x00);write_cmd(0x3A);      write_data(0x50);  //0X50 16BIT 0X60 18BIT 0X70 24BIT write_cmd(0x11);    // SLEEP OUTbflb_platform_delay_ms(120);write_cmd(0x29);   // DISPLAY ONbflb_platform_delay_ms(25);}int standard_dpi_init(standard_dpi_color_t *screen_buffer)
{if (screen_buffer == NULL) {return -1;}lcd_dpi_gpio_init();// LCD_KD050FW_init();/* init DBI and DPI peripheral*/standard_dpi_peripheral_init(screen_buffer);/* enable DPI, Start output data*/DVP_TSRC_Enable(DVP_TSRC1_ID);return 0;
}int standard_dpi_screen_switch(standard_dpi_color_t *screen_buffer)
{if (screen_buffer == NULL) {return -1;}csi_dcache_clean_range((void *)screen_buffer, (sizeof(standard_dpi_color_t) * STANDARD_DPI_W * STANDARD_DPI_H));BL_WR_REG(DVP_TSRC1_BASE, DTSRC_AXI2DVP_START_ADDR_BY, (uint32_t)(uintptr_t)screen_buffer);return 0;
}standard_dpi_color_t *standard_dpi_get_screen_using(void)
{return (standard_dpi_color_t *)screen_last;
}int standard_dpi_frame_callback_register(uint32_t callback_type, void (*callback)(void))
{if (callback_type == FRAME_INT_TYPE_SWAP) {standard_dpi_frame_swap_callback = callback;} else if (callback_type == FRAME_INT_TYPE_CYCLE) {standard_dpi_frame_callback = callback;}return 0;
}#elif defined(LCD_DPI_STANDARD)
#error "Devices that do not support DPI! Replace the driver port (lcd.h)"
#endif

2.M1s_Bl808_SDK/components/platform/soc/bl808/bl808_std/BSP_Common/lcd/mipi_dpistard_dpi.h文件,需要对一部分参数进行配置

主要是对水平宽度和垂直宽度进行设置分别是对应我的屏幕800 480

/*** @file standard_dpi.h* @brief** Copyright (c) 2021 Bouffalolab team** Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.  The* ASF licenses this file to you under the Apache License, Version 2.0 (the* "License"); you may not use this file except in compliance with the* License.  You may obtain a copy of the License at**   http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the* License for the specific language governing permissions and limitations* under the License.**/#ifndef _STANDARD_DBI_H_
#define _STANDARD_DBI_H_#include "bflb_platform.h"/* Optional pixel data format type */
#define STANDARD_DPI_PIXEL_FORMAT_RGB888 888
#define STANDARD_DPI_PIXEL_FORMAT_RGB565 565/* Select pixel format */
#define STANDARD_DPI_PIXEL_FORMAT STANDARD_DPI_PIXEL_FORMAT_RGB565/* STANDARD LCD width */
#define STANDARD_DPI_W 800
/* STANDARD LCD height */
#define STANDARD_DPI_H 480#if (STANDARD_DPI_PIXEL_FORMAT == STANDARD_DPI_PIXEL_FORMAT_RGB565)
#define STANDARD_DPI_COLOR_DEPTH 16
typedef uint16_t standard_dpi_color_t;
#elif (STANDARD_DPI_PIXEL_FORMAT == STANDARD_DPI_PIXEL_FORMAT_RGB888)
#define STANDARD_DPI_COLOR_DEPTH 32
typedef uint32_t standard_dpi_color_t;
#endifint standard_dpi_init(standard_dpi_color_t *screen_buffer);
int standard_dpi_screen_switch(standard_dpi_color_t *screen_buffer);
standard_dpi_color_t *standard_dpi_get_screen_using(void);
int standard_dpi_frame_callback_register(uint32_t callback_type, void (*callback)(void));#endif

3.M1s_Bl808_SDK/components/platform/soc/bl808/bl808_std/BSP_Common/lcd/lcd.h文件,这个文件是用来配置调用使用哪种屏幕的配置文件，主要是修改使用刚才配置的LCD_DPI_STANDARD驱动。需要注释掉原来的配置文件。

/*** @file lcd.h* @brief** Copyright (c) 2021 Bouffalolab team** Licensed to the Apache Software Foundation (ASF) under one or more* contributor license agreements.  See the NOTICE file distributed with* this work for additional information regarding copyright ownership.  The* ASF licenses this file to you under the Apache License, Version 2.0 (the* "License"); you may not use this file except in compliance with the* License.  You may obtain a copy of the License at**   http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the* License for the specific language governing permissions and limitations* under the License.**/#ifndef _LCD_H_
#define _LCD_H_#include "font.h"/* Select screen Type */
/* 选择使用的接口与屏幕 */
// #define LCD_DBI_ILI9488
// #define LCD_DISP_QSPI_GC9C01
// #define LCD_DPI_ILI9488#define LCD_DPI_STANDARD
// #define LCD_DSI_VIDIO_ILI9881C
// #define LCD_SPI_ILI9488
// #define LCD_SPI_ILI9341
// #define LCD_SPI_ST7796
//#define LCD_SPI_ST7789V
// #define  LCD_DBI_ST7796V#define LCD_INTERFACE_SPI       1
#define LCD_INTERFACE_DBI       2
#define LCD_INTERFACE_DPI       3
#define LCD_INTERFACE_DSI_VIDIO 4#if defined LCD_DBI_ST7796V
#include "mipi_dbi/st7796v_dbi.h"#define LCD_INTERFACE_TYPE           LCD_INTERFACE_DBI
#define LCD_W                        st7796v_DBI_W
#define LCD_H                        st7796v_DBI_H
#define LCD_COLOR_DEPTH              st7796v_DBI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) st7796v_dbi_##_func(__VA_ARGS__)#elif defined LCD_DBI_ILI9488#include "mipi_dbi/ili9488_dbi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_DBI
#define LCD_W                        ILI9488_DBI_W
#define LCD_H                        ILI9488_DBI_H
#define LCD_COLOR_DEPTH              ILI9488_DBI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) ili9488_dbi_##_func(__VA_ARGS__)#elif defined LCD_DISP_QSPI_GC9C01#include "disp_qspi/gc9c01_disp_qspi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_DBI
#define LCD_W                        GC9C01_DISP_QSPI_W
#define LCD_H                        GC9C01_DISP_QSPI_H
#define LCD_COLOR_DEPTH              GC9C01_DISP_QSPI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) gc9c01_disp_qspi_##_func(__VA_ARGS__)#elif defined LCD_DPI_ILI9488#include "mipi_dpi/ili9488_dpi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_DPI
#define LCD_W                        ILI9488_DPI_W
#define LCD_H                        ILI9488_DPI_H
#define LCD_COLOR_DEPTH              ILI9488_DPI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) ili9488_dpi_##_func(__VA_ARGS__)#elif defined LCD_DPI_STANDARD#include "mipi_dpi/standard_dpi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_DPI
#define LCD_W                        STANDARD_DPI_W
#define LCD_H                        STANDARD_DPI_H
#define LCD_COLOR_DEPTH              STANDARD_DPI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) standard_dpi_##_func(__VA_ARGS__)#elif defined LCD_DSI_VIDIO_ILI9881C#include "mipi_dsi/ili9881c_dsi_vidio.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_DSI_VIDIO
#define LCD_W                        ILI9881C_DSI_VIDIO_W
#define LCD_H                        ILI9881C_DSI_VIDIO_H
#define LCD_COLOR_DEPTH              ILI9881C_DSI_VIDIO_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) ili9881c_dsi_vidio_##_func(__VA_ARGS__)#elif defined LCD_SPI_ILI9488#include "spi/ili9488_spi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_SPI
#define LCD_W                        ILI9488_SPI_W
#define LCD_H                        ILI9488_SPI_H
#define LCD_COLOR_DEPTH              ILI9488_SPI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) ili9488_spi_##_func(__VA_ARGS__)#elif defined LCD_SPI_ILI9341#include "spi/ili9341_spi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_SPI
#define LCD_W                        ILI9341_SPI_W
#define LCD_H                        ILI9341_SPI_H
#define LCD_COLOR_DEPTH              ILI9341_SPI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) ili9341_spi_##_func(__VA_ARGS__)#elif defined LCD_SPI_ST7796#include "spi/st7796_spi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_SPI
#define LCD_W                        ST7796_SPI_W
#define LCD_H                        ST7796_SPI_H
#define LCD_COLOR_DEPTH              ST7796_SPI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (0)
#define _LCD_FUNC_DEFINE(_func, ...) st7796_spi_##_func(__VA_ARGS__)#elif defined LCD_SPI_ST7789V
#include "spi/st7789v_spi.h"
#define LCD_INTERFACE_TYPE           LCD_INTERFACE_SPI
#define LCD_W                        ST7789V_SPI_W
#define LCD_H                        ST7789V_SPI_H
#define LCD_COLOR_DEPTH              ST7789V_SPI_COLOR_DEPTH
#define LCD_COLOR_16_SWAP            (1)
#define _LCD_FUNC_DEFINE(_func, ...) st7789v_spi_##_func(__VA_ARGS__)#endif#define LCD_COLOR_RGB888(r, g, b) (((r << 16) | (g << 8) | (b)) & 0xffffff)
#define LCD_COLOR_RGB565(r, g, b) (((r >> 3) << 11 | (g >> 2) << 5 | (b >> 3)) & 0xffff)#if (LCD_COLOR_DEPTH == 16)
typedef uint16_t lcd_color_t;
#define LCD_COLOR_RGB(r, g, b) LCD_COLOR_RGB565(r, g, b)
#elif (LCD_COLOR_DEPTH == 32)
typedef uint32_t lcd_color_t;
#define LCD_COLOR_RGB(r, g, b) LCD_COLOR_RGB888(r, g, b)
#endif#define ABS(x) ((x) > 0 ? (x) : -(x))/* MCU LCD Common interface */
#if (LCD_INTERFACE_TYPE == LCD_INTERFACE_DBI) || (LCD_INTERFACE_TYPE == LCD_INTERFACE_SPI)extern struct device *lcd_dev_ifs;
extern struct device *lcd_dev_ifs_dma;
extern uint16_t lcd_max_x, lcd_max_y;int lcd_init(void);
int lcd_async_callback_register(void (*callback)(void));
int lcd_set_dir(uint8_t dir, uint8_t mir_flag);
int lcd_draw_point(uint16_t x, uint16_t y, lcd_color_t color);
int lcd_draw_area(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t color);
int lcd_clear(lcd_color_t color);
int lcd_draw_picture_blocking(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t *picture);
int lcd_draw_picture_nonblocking(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t *picture);
int lcd_draw_is_busy(void);
int lcd_draw_line(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t color);
int lcd_draw_rectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t color);
int lcd_draw_circle(uint16_t x, uint16_t y, uint16_t r, lcd_color_t color);
#if FONT_ASCII_16X8
int lcd_draw_str_ascii16(uint16_t x, uint16_t y, lcd_color_t color, lcd_color_t bk_color, uint8_t *str, uint8_t num);
#endif/* RGB LCD Common interface */
#elif (LCD_INTERFACE_TYPE == LCD_INTERFACE_DPI) || (LCD_INTERFACE_TYPE == LCD_INTERFACE_DSI_VIDIO)/* frame int callback and frame swap int callback */
#define FRAME_INT_TYPE_CYCLE 0
#define FRAME_INT_TYPE_SWAP  1int lcd_init(lcd_color_t *screen_buffer);
int lcd_screen_switch(lcd_color_t *screen_buffer);
lcd_color_t *lcd_get_screen_using(void);
int lcd_frame_callback_register(uint32_t callback_type, void (*callback)(void));int lcd_clear(lcd_color_t *screen_buffer, lcd_color_t color);
int lcd_draw_point(lcd_color_t *screen_buffer, uint16_t x, uint16_t y, lcd_color_t color);
int lcd_draw_area(lcd_color_t *screen_buffer, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t color);
int lcd_draw_picture(lcd_color_t *screen_buffer, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t *picture);
int lcd_draw_line(lcd_color_t *screen_buffer, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t color);
int lcd_draw_rectangle(lcd_color_t *screen_buffer, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, lcd_color_t color);
int lcd_draw_circle(lcd_color_t *screen_buffer, uint16_t x, uint16_t y, uint16_t r, lcd_color_t color);
#if FONT_ASCII_16X8
int lcd_draw_str_ascii16(lcd_color_t *screen_buffer, uint16_t x, uint16_t y, lcd_color_t color, lcd_color_t bk_color, uint8_t *str, uint8_t num);
#endif#endif#endif

4.M1s_Bl808_SDK/components/lvgl/lvgl/lvgl_conf.h文件,这个文件是用来配置lvgl在运行的时候的一些功能的，包括日志功能，和本次文件所采用的LVGL_BENCHMARK测试。

需要修改的地方为第98行，对当前的屏幕PPI进行计算，我使用的屏幕是5英寸，800*480像素，因此PPI为根号下（800*800+480*480） / 5=189，你可以计算你自己所需的屏幕PPI，方便显示的更加美观和清晰。其实这个参数也可以不修改。

需要修改第757行，打开benchmark功能。#define LV_USE_DEMO_BENCHMARK 1

/*** @file lv_conf.h* Configuration file for v8.2.0*//** Copy this file as `lv_conf.h`* 1. simply next to the `lvgl` folder* 2. or any other places and*    - define `LV_CONF_INCLUDE_SIMPLE`*    - add the path as include path*//* clang-format off */
#if 1 /*Set it to "1" to enable content*/#ifndef LV_CONF_H
#define LV_CONF_H#include <stdint.h>#include "lcd.h"/*====================COLOR SETTINGS*====================*//*Color depth: 1 (1 byte per pixel), 8 (RGB332), 16 (RGB565), 32 (ARGB8888)*/
#define LV_COLOR_DEPTH LCD_COLOR_DEPTH/*Swap the 2 bytes of RGB565 color. Useful if the display has an 8-bit interface (e.g. SPI)*/
#define LV_COLOR_16_SWAP LCD_COLOR_16_SWAP/*Enable features to draw on transparent background.*It's required if opa, and transform_* style properties are used.*Can be also used if the UI is above another layer, e.g. an OSD menu or video player.*/
#define LV_COLOR_SCREEN_TRANSP 1/* Adjust color mix functions rounding. GPUs might calculate color mix (blending) differently.* 0: round down, 64: round up from x.75, 128: round up from half, 192: round up from x.25, 254: round up */
#define LV_COLOR_MIX_ROUND_OFS 0/*Images pixels with this color will not be drawn if they are chroma keyed)*/
#define LV_COLOR_CHROMA_KEY lv_color_hex(0x00ff00)         /*pure green*//*=========================MEMORY SETTINGS*=========================*//*1: use custom malloc/free, 0: use the built-in `lv_mem_alloc()` and `lv_mem_free()`*/
#define LV_MEM_CUSTOM 1
#if LV_MEM_CUSTOM == 0/*Size of the memory available for `lv_mem_alloc()` in bytes (>= 2kB)*/#define LV_MEM_SIZE (48U * 1024U)          /*[bytes]*//*Set an address for the memory pool instead of allocating it as a normal array. Can be in external SRAM too.*/#define LV_MEM_ADR 0    /*0: unused*//*Instead of an address give a memory allocator that will be called to get a memory pool for LVGL. E.g. my_malloc*/#if LV_MEM_ADR == 0#undef LV_MEM_POOL_INCLUDE#undef LV_MEM_POOL_ALLOC#endif#else       /*LV_MEM_CUSTOM*/#define LV_MEM_CUSTOM_INCLUDE <stdlib.h>   /*Header for the dynamic memory function*/#define LV_MEM_CUSTOM_ALLOC   malloc#define LV_MEM_CUSTOM_FREE    free#define LV_MEM_CUSTOM_REALLOC realloc
#endif     /*LV_MEM_CUSTOM*//*Number of the intermediate memory buffer used during rendering and other internal processing mechanisms.*You will see an error log message if there wasn't enough buffers. */
#define LV_MEM_BUF_MAX_NUM 16/*Use the standard `memcpy` and `memset` instead of LVGL's own functions. (Might or might not be faster).*/
#define LV_MEMCPY_MEMSET_STD 0/*====================HAL SETTINGS*====================*//*Default display refresh period. LVG will redraw changed areas with this period time*/
#define LV_DISP_DEF_REFR_PERIOD 20      /*[ms]*//*Input device read period in milliseconds*/
#define LV_INDEV_DEF_READ_PERIOD 20     /*[ms]*//*Use a custom tick source that tells the elapsed time in milliseconds.*It removes the need to manually update the tick with `lv_tick_inc()`)*/
#define LV_TICK_CUSTOM 1
#if LV_TICK_CUSTOM#define LV_TICK_CUSTOM_INCLUDE "lv_port_tick.h"         /*Header for the system time function*/#define LV_TICK_CUSTOM_SYS_TIME_EXPR custom_tick_get()    /*Expression evaluating to current system time in ms*/
#endif   /*LV_TICK_CUSTOM*//*Default Dot Per Inch. Used to initialize default sizes such as widgets sized, style paddings.*(Not so important, you can adjust it to modify default sizes and spaces)*/
#define LV_DPI_DEF 186     /*[px/inch]*//*=======================* FEATURE CONFIGURATION*=======================*//*-------------* Drawing*-----------*//*Enable complex draw engine.*Required to draw shadow, gradient, rounded corners, circles, arc, skew lines, image transformations or any masks*/
#define LV_DRAW_COMPLEX 1
#if LV_DRAW_COMPLEX != 0/*Allow buffering some shadow calculation.*LV_SHADOW_CACHE_SIZE is the max. shadow size to buffer, where shadow size is `shadow_width + radius`*Caching has LV_SHADOW_CACHE_SIZE^2 RAM cost*/#define LV_SHADOW_CACHE_SIZE 0/* Set number of maximally cached circle data.* The circumference of 1/4 circle are saved for anti-aliasing* radius * 4 bytes are used per circle (the most often used radiuses are saved)* 0: to disable caching */#define LV_CIRCLE_CACHE_SIZE 4
#endif /*LV_DRAW_COMPLEX*//*** "Simple layers" are used when a widget has `style_opa < 255` to buffer the widget into a layer* and blend it as an image with the given opacity.* Note that `bg_opa`, `text_opa` etc don't require buffering into layer)* The widget can be buffered in smaller chunks to avoid using large buffers.** - LV_LAYER_SIMPLE_BUF_SIZE: [bytes] the optimal target buffer size. LVGL will try to allocate it* - LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE: [bytes]  used if `LV_LAYER_SIMPLE_BUF_SIZE` couldn't be allocated.** Both buffer sizes are in bytes.* "Transformed layers" (where transform_angle/zoom properties are used) use larger buffers* and can't be drawn in chunks. So these settings affects only widgets with opacity.*/
#define LV_LAYER_SIMPLE_BUF_SIZE          (24 * 1024)
#define LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE (3 * 1024)/*Default image cache size. Image caching keeps the images opened.*If only the built-in image formats are used there is no real advantage of caching. (I.e. if no new image decoder is added)*With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images.*However the opened images might consume additional RAM.*0: to disable caching*/
#define LV_IMG_CACHE_DEF_SIZE 0/*Number of stops allowed per gradient. Increase this to allow more stops.*This adds (sizeof(lv_color_t) + 1) bytes per additional stop*/
#define LV_GRADIENT_MAX_STOPS 2/*Default gradient buffer size.*When LVGL calculates the gradient "maps" it can save them into a cache to avoid calculating them again.*LV_GRAD_CACHE_DEF_SIZE sets the size of this cache in bytes.*If the cache is too small the map will be allocated only while it's required for the drawing.*0 mean no caching.*/
#define LV_GRAD_CACHE_DEF_SIZE 0/*Allow dithering the gradients (to achieve visual smooth color gradients on limited color depth display)*LV_DITHER_GRADIENT implies allocating one or two more lines of the object's rendering surface*The increase in memory consumption is (32 bits * object width) plus 24 bits * object width if using error diffusion */
#define LV_DITHER_GRADIENT 0
#if LV_DITHER_GRADIENT/*Add support for error diffusion dithering.*Error diffusion dithering gets a much better visual result, but implies more CPU consumption and memory when drawing.*The increase in memory consumption is (24 bits * object's width)*/#define LV_DITHER_ERROR_DIFFUSION 0
#endif/*Maximum buffer size to allocate for rotation.*Only used if software rotation is enabled in the display driver.*/
#define LV_DISP_ROT_MAX_BUF (10*1024)/*-------------* GPU*-----------*//*Use Arm's 2D acceleration library Arm-2D */
#define LV_USE_GPU_ARM2D 0/*Use STM32's DMA2D (aka Chrom Art) GPU*/
#define LV_USE_GPU_STM32_DMA2D 0
#if LV_USE_GPU_STM32_DMA2D/*Must be defined to include path of CMSIS header of target processore.g. "stm32f769xx.h" or "stm32f429xx.h"*/#define LV_GPU_DMA2D_CMSIS_INCLUDE
#endif/*Use SWM341's DMA2D GPU*/
#define LV_USE_GPU_SWM341_DMA2D 0
#if LV_USE_GPU_SWM341_DMA2D#define LV_GPU_SWM341_DMA2D_INCLUDE "SWM341.h"
#endif/*Use NXP's PXP GPU iMX RTxxx platforms*/
#define LV_USE_GPU_NXP_PXP 0
#if LV_USE_GPU_NXP_PXP/*1: Add default bare metal and FreeRTOS interrupt handling routines for PXP (lv_gpu_nxp_pxp_osa.c)*   and call lv_gpu_nxp_pxp_init() automatically during lv_init(). Note that symbol SDK_OS_FREE_RTOS*   has to be defined in order to use FreeRTOS OSA, otherwise bare-metal implementation is selected.*0: lv_gpu_nxp_pxp_init() has to be called manually before lv_init()*/#define LV_USE_GPU_NXP_PXP_AUTO_INIT 0
#endif/*Use NXP's VG-Lite GPU iMX RTxxx platforms*/
#define LV_USE_GPU_NXP_VG_LITE 0/*Use SDL renderer API*/
#define LV_USE_GPU_SDL 0
#if LV_USE_GPU_SDL#define LV_GPU_SDL_INCLUDE_PATH <SDL2/SDL.h>/*Texture cache size, 8MB by default*/#define LV_GPU_SDL_LRU_SIZE (1024 * 1024 * 8)/*Custom blend mode for mask drawing, disable if you need to link with older SDL2 lib*/#define LV_GPU_SDL_CUSTOM_BLEND_MODE (SDL_VERSION_ATLEAST(2, 0, 6))
#endif#if (defined(BL808) || defined(BL606P))#define LV_USE_GPU_LB_DMA2D  0#define LV_USE_GPU_LB_DMA2D_AUTO_INIT     1#if defined(CPU_D0) && (LV_COLOR_DEPTH != 16 || LV_COLOR_SCREEN_TRANSP == 0)#define LV_USE_RV_VECTOR_EXT 1#else#define LV_USE_RV_VECTOR_EXT 0#endif
#else#define LV_USE_GPU_LB_DMA2D  0#define LV_USE_GPU_LB_DMA2D_AUTO_INIT     0#define LV_USE_RV_VECTOR_EXT 0#endif/*-------------* Logging*-----------*//*Enable the log module*/
#define LV_USE_LOG 1
#if LV_USE_LOG/*How important log should be added:*LV_LOG_LEVEL_TRACE       A lot of logs to give detailed information*LV_LOG_LEVEL_INFO        Log important events*LV_LOG_LEVEL_WARN        Log if something unwanted happened but didn't cause a problem*LV_LOG_LEVEL_ERROR       Only critical issue, when the system may fail*LV_LOG_LEVEL_USER        Only logs added by the user*LV_LOG_LEVEL_NONE        Do not log anything*/#define LV_LOG_LEVEL LV_LOG_LEVEL_WARN/*1: Print the log with 'printf';*0: User need to register a callback with `lv_log_register_print_cb()`*/#define LV_LOG_PRINTF 0/*Enable/disable LV_LOG_TRACE in modules that produces a huge number of logs*/#define LV_LOG_TRACE_MEM        1#define LV_LOG_TRACE_TIMER      1#define LV_LOG_TRACE_INDEV      1#define LV_LOG_TRACE_DISP_REFR  1#define LV_LOG_TRACE_EVENT      1#define LV_LOG_TRACE_OBJ_CREATE 1#define LV_LOG_TRACE_LAYOUT     1#define LV_LOG_TRACE_ANIM       1#endif  /*LV_USE_LOG*//*-------------* Asserts*-----------*//*Enable asserts if an operation is failed or an invalid data is found.*If LV_USE_LOG is enabled an error message will be printed on failure*/
#define LV_USE_ASSERT_NULL          1   /*Check if the parameter is NULL. (Very fast, recommended)*/
#define LV_USE_ASSERT_MALLOC        1   /*Checks is the memory is successfully allocated or no. (Very fast, recommended)*/
#define LV_USE_ASSERT_STYLE         0   /*Check if the styles are properly initialized. (Very fast, recommended)*/
#define LV_USE_ASSERT_MEM_INTEGRITY 0   /*Check the integrity of `lv_mem` after critical operations. (Slow)*/
#define LV_USE_ASSERT_OBJ           0   /*Check the object's type and existence (e.g. not deleted). (Slow)*//*Add a custom handler when assert happens e.g. to restart the MCU*/
#define LV_ASSERT_HANDLER_INCLUDE <stdint.h>
#define LV_ASSERT_HANDLER while(1);   /*Halt by default*//*-------------* Others*-----------*//*1: Show CPU usage and FPS count*/
#define LV_USE_PERF_MONITOR 1
#if LV_USE_PERF_MONITOR#define LV_USE_PERF_MONITOR_POS LV_ALIGN_BOTTOM_RIGHT
#endif/*1: Show the used memory and the memory fragmentation* Requires LV_MEM_CUSTOM = 0*/
#define LV_USE_MEM_MONITOR 1
#if LV_USE_MEM_MONITOR#define LV_USE_MEM_MONITOR_POS LV_ALIGN_BOTTOM_LEFT
#endif/*1: Draw random colored rectangles over the redrawn areas*/
#define LV_USE_REFR_DEBUG 0/*Change the built in (v)snprintf functions*/
#define LV_SPRINTF_CUSTOM 0
#if LV_SPRINTF_CUSTOM#define LV_SPRINTF_INCLUDE <stdio.h>#define lv_snprintf  snprintf#define lv_vsnprintf vsnprintf
#else   /*LV_SPRINTF_CUSTOM*/#define LV_SPRINTF_USE_FLOAT 0
#endif  /*LV_SPRINTF_CUSTOM*/#define LV_USE_USER_DATA 1/*Garbage Collector settings*Used if lvgl is bound to higher level language and the memory is managed by that language*/
#define LV_ENABLE_GC 0
#if LV_ENABLE_GC != 0#define LV_GC_INCLUDE "gc.h"                           /*Include Garbage Collector related things*/
#endif /*LV_ENABLE_GC*//*=====================*  COMPILER SETTINGS*====================*//*For big endian systems set to 1*/
#define LV_BIG_ENDIAN_SYSTEM 0/*Define a custom attribute to `lv_tick_inc` function*/
#define LV_ATTRIBUTE_TICK_INC/*Define a custom attribute to `lv_timer_handler` function*/
#define LV_ATTRIBUTE_TIMER_HANDLER/*Define a custom attribute to `lv_disp_flush_ready` function*/
#define LV_ATTRIBUTE_FLUSH_READY/*Required alignment size for buffers*/
#define LV_ATTRIBUTE_MEM_ALIGN_SIZE 1/*Will be added where memories needs to be aligned (with -Os data might not be aligned to boundary by default).* E.g. __attribute__((aligned(4)))*/
#define LV_ATTRIBUTE_MEM_ALIGN/*Attribute to mark large constant arrays for example font's bitmaps*/
#define LV_ATTRIBUTE_LARGE_CONST/*Compiler prefix for a big array declaration in RAM*/
#define LV_ATTRIBUTE_LARGE_RAM_ARRAY/*Place performance critical functions into a faster memory (e.g RAM)*/
#define LV_ATTRIBUTE_FAST_MEM/*Prefix variables that are used in GPU accelerated operations, often these need to be placed in RAM sections that are DMA accessible*/
#define LV_ATTRIBUTE_DMA/*Export integer constant to binding. This macro is used with constants in the form of LV_<CONST> that*should also appear on LVGL binding API such as Micropython.*/
#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning /*The default value just prevents GCC warning*//*Extend the default -32k..32k coordinate range to -4M..4M by using int32_t for coordinates instead of int16_t*/
#define LV_USE_LARGE_COORD 0/*==================*   FONT USAGE*===================*//*Montserrat fonts with ASCII range and some symbols using bpp = 4*https://fonts.google.com/specimen/Montserrat*/
#define LV_FONT_MONTSERRAT_8  0
#define LV_FONT_MONTSERRAT_10 0
#define LV_FONT_MONTSERRAT_12 0
#define LV_FONT_MONTSERRAT_14 1
#define LV_FONT_MONTSERRAT_16 0
#define LV_FONT_MONTSERRAT_18 0
#define LV_FONT_MONTSERRAT_20 0
#define LV_FONT_MONTSERRAT_22 0
#define LV_FONT_MONTSERRAT_24 0
#define LV_FONT_MONTSERRAT_26 0
#define LV_FONT_MONTSERRAT_28 0
#define LV_FONT_MONTSERRAT_30 0
#define LV_FONT_MONTSERRAT_32 0
#define LV_FONT_MONTSERRAT_34 0
#define LV_FONT_MONTSERRAT_36 0
#define LV_FONT_MONTSERRAT_38 0
#define LV_FONT_MONTSERRAT_40 0
#define LV_FONT_MONTSERRAT_42 0
#define LV_FONT_MONTSERRAT_44 0
#define LV_FONT_MONTSERRAT_46 0
#define LV_FONT_MONTSERRAT_48 0/*Demonstrate special features*/
#define LV_FONT_MONTSERRAT_12_SUBPX      0
#define LV_FONT_MONTSERRAT_28_COMPRESSED 0  /*bpp = 3*/
#define LV_FONT_DEJAVU_16_PERSIAN_HEBREW 0  /*Hebrew, Arabic, Persian letters and all their forms*/
#define LV_FONT_SIMSUN_16_CJK            0  /*1000 most common CJK radicals*//*Pixel perfect monospace fonts*/
#define LV_FONT_UNSCII_8  0
#define LV_FONT_UNSCII_16 0/*Optionally declare custom fonts here.*You can use these fonts as default font too and they will be available globally.*E.g. #define LV_FONT_CUSTOM_DECLARE   LV_FONT_DECLARE(my_font_1) LV_FONT_DECLARE(my_font_2)*/
#define LV_FONT_CUSTOM_DECLARE/*Always set a default font*/
#define LV_FONT_DEFAULT &lv_font_montserrat_14/*Enable handling large font and/or fonts with a lot of characters.*The limit depends on the font size, font face and bpp.*Compiler error will be triggered if a font needs it.*/
#define LV_FONT_FMT_TXT_LARGE 0/*Enables/disables support for compressed fonts.*/
#define LV_USE_FONT_COMPRESSED 1/*Enable subpixel rendering*/
#define LV_USE_FONT_SUBPX 1
#if LV_USE_FONT_SUBPX/*Set the pixel order of the display. Physical order of RGB channels. Doesn't matter with "normal" fonts.*/#define LV_FONT_SUBPX_BGR 0  /*0: RGB; 1:BGR order*/
#endif/*=================*  TEXT SETTINGS*=================*//*** Select a character encoding for strings.* Your IDE or editor should have the same character encoding* - LV_TXT_ENC_UTF8* - LV_TXT_ENC_ASCII*/
#define LV_TXT_ENC LV_TXT_ENC_UTF8/*Can break (wrap) texts on these chars*/
#define LV_TXT_BREAK_CHARS " ,.;:-_"/*If a word is at least this long, will break wherever "prettiest"*To disable, set to a value <= 0*/
#define LV_TXT_LINE_BREAK_LONG_LEN 0/*Minimum number of characters in a long word to put on a line before a break.*Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
#define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN 3/*Minimum number of characters in a long word to put on a line after a break.*Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
#define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3/*The control character to use for signalling text recoloring.*/
#define LV_TXT_COLOR_CMD "#"/*Support bidirectional texts. Allows mixing Left-to-Right and Right-to-Left texts.*The direction will be processed according to the Unicode Bidirectional Algorithm:*https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
#define LV_USE_BIDI 0
#if LV_USE_BIDI/*Set the default direction. Supported values:*`LV_BASE_DIR_LTR` Left-to-Right*`LV_BASE_DIR_RTL` Right-to-Left*`LV_BASE_DIR_AUTO` detect texts base direction*/#define LV_BIDI_BASE_DIR_DEF LV_BASE_DIR_AUTO
#endif/*Enable Arabic/Persian processing*In these languages characters should be replaced with an other form based on their position in the text*/
#define LV_USE_ARABIC_PERSIAN_CHARS 0/*==================*  WIDGET USAGE*================*//*Documentation of the widgets: https://docs.lvgl.io/latest/en/html/widgets/index.html*/#define LV_USE_ARC        1#define LV_USE_BAR        1#define LV_USE_BTN        1#define LV_USE_BTNMATRIX  1#define LV_USE_CANVAS     1#define LV_USE_CHECKBOX   1#define LV_USE_DROPDOWN   1   /*Requires: lv_label*/#define LV_USE_IMG        1   /*Requires: lv_label*/#define LV_USE_LABEL      1
#if LV_USE_LABEL#define LV_LABEL_TEXT_SELECTION 1 /*Enable selecting text of the label*/#define LV_LABEL_LONG_TXT_HINT 1  /*Store some extra info in labels to speed up drawing of very long texts*/
#endif#define LV_USE_LINE       1#define LV_USE_ROLLER     1   /*Requires: lv_label*/
#if LV_USE_ROLLER#define LV_ROLLER_INF_PAGES 7 /*Number of extra "pages" when the roller is infinite*/
#endif#define LV_USE_SLIDER     1   /*Requires: lv_bar*/#define LV_USE_SWITCH     1#define LV_USE_TEXTAREA   1   /*Requires: lv_label*/
#if LV_USE_TEXTAREA != 0#define LV_TEXTAREA_DEF_PWD_SHOW_TIME 1500    /*ms*/
#endif#define LV_USE_TABLE      1/*==================* EXTRA COMPONENTS*==================*//*-----------* Widgets*----------*/
#define LV_USE_ANIMIMG    1#define LV_USE_CALENDAR   1
#if LV_USE_CALENDAR#define LV_CALENDAR_WEEK_STARTS_MONDAY 0#if LV_CALENDAR_WEEK_STARTS_MONDAY#define LV_CALENDAR_DEFAULT_DAY_NAMES {"Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"}#else#define LV_CALENDAR_DEFAULT_DAY_NAMES {"Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"}#endif#define LV_CALENDAR_DEFAULT_MONTH_NAMES {"January", "February", "March",  "April", "May",  "June", "July", "August", "September", "October", "November", "December"}#define LV_USE_CALENDAR_HEADER_ARROW 1#define LV_USE_CALENDAR_HEADER_DROPDOWN 1
#endif  /*LV_USE_CALENDAR*/#define LV_USE_CHART      1#define LV_USE_COLORWHEEL 1#define LV_USE_IMGBTN     1#define LV_USE_KEYBOARD   1#define LV_USE_LED        1#define LV_USE_LIST       1#define LV_USE_MENU       1#define LV_USE_METER      1#define LV_USE_MSGBOX     1#define LV_USE_SPAN       1
#if LV_USE_SPAN/*A line text can contain maximum num of span descriptor */#define LV_SPAN_SNIPPET_STACK_SIZE 64
#endif#define LV_USE_SPINBOX    1#define LV_USE_SPINNER    1#define LV_USE_TABVIEW    1#define LV_USE_TILEVIEW   1#define LV_USE_WIN        1/*-----------* Themes*----------*//*A simple, impressive and very complete theme*/
#define LV_USE_THEME_DEFAULT 1
#if LV_USE_THEME_DEFAULT/*0: Light mode; 1: Dark mode*/#define LV_THEME_DEFAULT_DARK 0/*1: Enable grow on press*/#define LV_THEME_DEFAULT_GROW 1/*Default transition time in [ms]*/#define LV_THEME_DEFAULT_TRANSITION_TIME 80
#endif /*LV_USE_THEME_DEFAULT*//*A very simple theme that is a good starting point for a custom theme*/
#define LV_USE_THEME_BASIC 1/*A theme designed for monochrome displays*/
#define LV_USE_THEME_MONO 1/*-----------* Layouts*----------*//*A layout similar to Flexbox in CSS.*/
#define LV_USE_FLEX 1/*A layout similar to Grid in CSS.*/
#define LV_USE_GRID 1/*---------------------* 3rd party libraries*--------------------*//*File system interfaces for common APIs *//*API for fopen, fread, etc*/
#define LV_USE_FS_STDIO 0
#if LV_USE_FS_STDIO#define LV_FS_STDIO_LETTER '\0'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/#define LV_FS_STDIO_PATH ""         /*Set the working directory. File/directory paths will be appended to it.*/#define LV_FS_STDIO_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
#endif/*API for open, read, etc*/
#define LV_USE_FS_POSIX 0
#if LV_USE_FS_POSIX#define LV_FS_POSIX_LETTER '\0'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/#define LV_FS_POSIX_PATH ""         /*Set the working directory. File/directory paths will be appended to it.*/#define LV_FS_POSIX_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
#endif/*API for CreateFile, ReadFile, etc*/
#define LV_USE_FS_WIN32 0
#if LV_USE_FS_WIN32#define LV_FS_WIN32_LETTER '\0'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/#define LV_FS_WIN32_PATH ""         /*Set the working directory. File/directory paths will be appended to it.*/#define LV_FS_WIN32_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
#endif/*API for FATFS (needs to be added separately). Uses f_open, f_read, etc*/
#if defined(BL808) || defined(BL606P) || defined(BL616)
#define LV_USE_FS_FATFS 0
#else
#define LV_USE_FS_FATFS 0
#endif#if LV_USE_FS_FATFS#define LV_FS_FATFS_LETTER 'S'     /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/#define LV_FS_FATFS_CACHE_SIZE 0    /*>0 to cache this number of bytes in lv_fs_read()*/
#endif/*PNG decoder library*/
#define LV_USE_PNG 1/*BMP decoder library*/
#define LV_USE_BMP 0/* JPG + split JPG decoder library.* Split JPG is a custom format optimized for embedded systems. */
#define LV_USE_SJPG 0/*GIF decoder library*/
#define LV_USE_GIF 0/*QR code library*/
#define LV_USE_QRCODE 0/*FreeType library*/
#define LV_USE_FREETYPE 0
#if LV_USE_FREETYPE/*Memory used by FreeType to cache characters [bytes] (-1: no caching)*/#define LV_FREETYPE_CACHE_SIZE (16 * 1024)#if LV_FREETYPE_CACHE_SIZE >= 0/* 1: bitmap cache use the sbit cache, 0:bitmap cache use the image cache. *//* sbit cache:it is much more memory efficient for small bitmaps(font size < 256) *//* if font size >= 256, must be configured as image cache */#define LV_FREETYPE_SBIT_CACHE 0/* Maximum number of opened FT_Face/FT_Size objects managed by this cache instance. *//* (0:use system defaults) */#define LV_FREETYPE_CACHE_FT_FACES 0#define LV_FREETYPE_CACHE_FT_SIZES 0#endif
#endif/*Rlottie library*/
#define LV_USE_RLOTTIE 0/*FFmpeg library for image decoding and playing videos*Supports all major image formats so do not enable other image decoder with it*/
#define LV_USE_FFMPEG 0
#if LV_USE_FFMPEG/*Dump input information to stderr*/#define LV_FFMPEG_DUMP_FORMAT 0
#endif/*-----------* Others*----------*//*1: Enable API to take snapshot for object*/
#define LV_USE_SNAPSHOT 0/*1: Enable Monkey test*/
#define LV_USE_MONKEY 0/*1: Enable grid navigation*/
#define LV_USE_GRIDNAV 0/*1: Enable lv_obj fragment*/
#define LV_USE_FRAGMENT 0/*1: Support using images as font in label or span widgets */
#define LV_USE_IMGFONT 0/*1: Enable a published subscriber based messaging system */
#define LV_USE_MSG 0/*1: Enable Pinyin input method*/
/*Requires: lv_keyboard*/
#define LV_USE_IME_PINYIN 0
#if LV_USE_IME_PINYIN/*1: Use default thesaurus*//*If you do not use the default thesaurus, be sure to use `lv_ime_pinyin` after setting the thesauruss*/#define LV_IME_PINYIN_USE_DEFAULT_DICT 1/*Set the maximum number of candidate panels that can be displayed*//*This needs to be adjusted according to the size of the screen*/#define LV_IME_PINYIN_CAND_TEXT_NUM 6/*Use 9 key input(k9)*/#define LV_IME_PINYIN_USE_K9_MODE      1#if LV_IME_PINYIN_USE_K9_MODE == 1#define LV_IME_PINYIN_K9_CAND_TEXT_NUM 3#endif // LV_IME_PINYIN_USE_K9_MODE
#endif/*==================
* EXAMPLES
*==================*//*Enable the examples to be built with the library*/
#define LV_BUILD_EXAMPLES 1/*===================* DEMO USAGE====================*//*Show some widget. It might be required to increase `LV_MEM_SIZE` */
#define LV_USE_DEMO_WIDGETS 1
#if LV_USE_DEMO_WIDGETS
#define LV_DEMO_WIDGETS_SLIDESHOW 0
#endif/*Demonstrate the usage of encoder and keyboard*/
#define LV_USE_DEMO_KEYPAD_AND_ENCODER 0/*Benchmark your system*/
#define LV_USE_DEMO_BENCHMARK 1
#if LV_USE_DEMO_BENCHMARK
/*Use RGB565A8 images with 16 bit color depth instead of ARGB8565*/
#define LV_DEMO_BENCHMARK_RGB565A8 0
#endif/*Stress test for LVGL*/
#define LV_USE_DEMO_STRESS 0/*Music player demo*/
#define LV_USE_DEMO_MUSIC 0
#if LV_USE_DEMO_MUSIC#define LV_DEMO_MUSIC_SQUARE    0#define LV_DEMO_MUSIC_LANDSCAPE 0#define LV_DEMO_MUSIC_ROUND     0#define LV_DEMO_MUSIC_LARGE     0#define LV_DEMO_MUSIC_AUTO_PLAY 0
#endif/*--END OF LV_CONF_H--*/#endif /*LV_CONF_H*/#endif /*End of "Content enable"*/

五、LVGL_DEMO文件修改

基本上上述文件修改完成以后，就只需要修改M1s_BL808_example/c906_app/lvgl_demo/main.c文件就可以启用测试功能了。

需要注释掉一部分不需要的背光控制功能，然后使能 lv_demo_benchmark();

#include <stdbool.h>
#include <stdio.h>/* FreeRTOS */
#include <FreeRTOS.h>
#include <task.h>/* bl808 c906 std driver */
#include <bl808_glb.h>#include "demos/lv_demos.h"
#include "lv_port_disp.h"
#include "lv_port_indev.h"
#include "lvgl.h"// #include "ui.h"
#include "m1s_c906_xram_pwm.h"// #include "bl-osd-app.h"#define PWM_PORT (0)
#define PWM_PIN (8)
#define LCD_BL_PWM_PIN (11)void backlight_init(void)
{// m1s_xram_pwm_init(PWM_PORT, PWM_PIN, 2000, 25);// m1s_xram_pwm_start(PWM_PORT, PWM_PIN);// m1s_xram_pwm_init(PWM_PORT, LCD_BL_PWM_PIN, 2000, 25);// m1s_xram_pwm_start(PWM_PORT, LCD_BL_PWM_PIN);
}/* lvgl log cb */
void lv_log_print_g_cb(const char *buf)
{printf("[LVGL] %s", buf);
}static void lvgl_task(void *param)
{while (1) {lv_task_handler();vTaskDelay(1);}vTaskDelete(NULL);
}void main()
{backlight_init();lv_log_register_print_cb(lv_log_print_g_cb);lv_init();lv_port_disp_init();// lv_port_indev_init();lv_demo_benchmark();// lv_demo_widgets();// ui_init();// bl_osd_init();xTaskCreate(lvgl_task, (char *)"lvgl task", 512, NULL, 15, NULL);}

六、固件编译及烧录

按照SIPEED的介绍，对lvgl_demo文件进行编译，然后进行烧录，接好屏幕，接好屏幕的背光。按下重启键，就可以看到美妙的LVGL_BENCHMARK正在运行啦，下面贴一个测试的成绩，使用的是800*480的屏幕，RGB565输出。

Starting bl808 now....
Heap Info: 63455 KB @ [0x0x0000000050208400 ~ 0x0x0000000054000000]
[OS] Starting aos_loop_proc task...
[OS] Stop c906 xram handle...
[OS] Starting OS Scheduler...
Init CLI with event Driven
[LVGL] 
LVGL v8.3.1  Benchmark (in csv format)
[LVGL] Weighted FPS: 99
[LVGL] Opa. speed: 85%
[LVGL] Rectangle,166
[LVGL] Rectangle + opa,[LVGL] 87
[LVGL] Rectangle rounded,141
[LVGL] Rectangle rounded + opa,[LVGL] 79
[LVGL] Circle,99
[LVGL] Circle + opa,[LVGL] 52
[LVGL] Border,198
[LVGL] Border + opa,[LVGL] 198
[LVGL] Border rounded,180
[LVGL] Border rounded + opa,[LVGL] 172
[LVGL] Circle border,96
[LVGL] Circle border + opa,[LVGL] 92
[LVGL] Border top,198
[LVGL] Border top + opa,[LVGL] 198
[LVGL] Border left,198
[LVGL] Border left + opa,[LVGL] 198
[LVGL] Border top + left,197
[LVGL] Border top + left + opa,[LVGL] 179
[LVGL] Border left + right,174
[LVGL] Border left + right + opa,[LVGL] 173
[LVGL] Border top + bottom,197
[LVGL] Border top + bottom + opa,[LVGL] 196
[LVGL] Shadow small,84
[LVGL] Shadow small + opa,[LVGL] 80
[LVGL] Shadow small offset,78
[LVGL] Shadow small offset + opa,[LVGL] 66
[LVGL] Shadow large,52
[LVGL] Shadow large + opa,[LVGL] 50
[LVGL] Shadow large offset,51
[LVGL] Shadow large offset + opa,[LVGL] 46
[LVGL] Image RGB,167
[LVGL] Image RGB + opa,[LVGL] 112
[LVGL] Image ARGB,124
[LVGL] Image ARGB + opa,[LVGL] 106
[LVGL] Image chorma keyed,139
[LVGL] Image chorma keyed + opa,[LVGL] 109
[LVGL] Image indexed,80
[LVGL] Image indexed + opa,[LVGL] 71
[LVGL] Image alpha only,74
[LVGL] Image alpha only + opa,[LVGL] 66
[LVGL] Image RGB recolor,87
[LVGL] Image RGB recolor + opa,[LVGL] 68
[LVGL] Image ARGB recolor,75
[LVGL] Image ARGB recolor + opa,[LVGL] 68
[LVGL] Image chorma keyed recolor,80
[LVGL] Image chorma keyed recolor + opa,[LVGL] 70
[LVGL] Image indexed recolor,57
[LVGL] Image indexed recolor + opa,[LVGL] 52
[LVGL] Image RGB rotate,76
[LVGL] Image RGB rotate + opa,[LVGL] 55
[LVGL] Image RGB rotate anti aliased,35
[LVGL] Image RGB rotate anti aliased + opa,[LVGL] 30
[LVGL] Image ARGB rotate,66
[LVGL] Image ARGB rotate + opa,[LVGL] 58
[LVGL] Image ARGB rotate anti aliased,31
[LVGL] Image ARGB rotate anti aliased + opa,[LVGL] 29
[LVGL] Image RGB zoom,100
[LVGL] Image RGB zoom + opa,[LVGL] 76
[LVGL] Image RGB zoom anti aliased,49
[LVGL] Image RGB zoom anti aliased + opa,[LVGL] 43
[LVGL] Image ARGB zoom,90
[LVGL] Image ARGB zoom + opa,[LVGL] 83
[LVGL] Image ARGB zoom anti aliased,43
[LVGL] Image ARGB zoom anti aliased + opa,[LVGL] 40
[LVGL] Text small,68
[LVGL] Text small + opa,[LVGL] 69
[LVGL] Text medium,69
[LVGL] Text medium + opa,[LVGL] 69
[LVGL] Text large,69
[LVGL] Text large + opa,[LVGL] 69
[LVGL] Text small compressed,49
[LVGL] Text small compressed + opa,[LVGL] 49
[LVGL] Text medium compressed,43
[LVGL] Text medium compressed + opa,[LVGL] 43
[LVGL] Text large compressed,31
[LVGL] Text large compressed + opa,[LVGL] 31
[LVGL] Line,114
[LVGL] Line + opa,[LVGL] 116
[LVGL] Arc think,132
[LVGL] Arc think + opa,[LVGL] 130
[LVGL] Arc thick,130
[LVGL] Arc thick + opa,[LVGL] 121
[LVGL] Substr. rectangle,52
[LVGL] Substr. rectangle + opa,[LVGL] 26
[LVGL] Substr. border,55
[LVGL] Substr. border + opa,[LVGL] 54
[LVGL] Substr. shadow,22
[LVGL] Substr. shadow + opa,[LVGL] 22
[LVGL] Substr. image,55
[LVGL] Substr. image + opa,[LVGL] 55
[LVGL] Substr. line,55
[LVGL] Substr. line + opa,[LVGL] 60
[LVGL] Substr. arc,124
[LVGL] Substr. arc + opa,[LVGL] 124
[LVGL] Substr. text,41
[LVGL] Substr. text + opa,[LVGL] 41

运行的图片